Secretary's Advisory Committee on Animal Health; Meeting [Docket No. APHIS-2016-0007] Singeltary Submission
From: Terry S. Singeltary Sr.
Sent: Saturday, February 06, 2016 12:11 PM
Subject: Secretary's Advisory Committee on Animal Health; Meeting
[Docket No. APHIS-2016-0007] Singeltary Submission
Hello Mrs. R.J. Cabrera and USDA et al,
I would kindly like to submit and comment on the Secretary's Advisory
Committee on Animal Health; Meeting [Docket No. APHIS-2016-0007] ;
[Federal Register Volume 81, Number 25 (Monday, February 8, 2016)]
[Notices] [Page 6501] From the Federal Register Online via the Government
Publishing Office [www.gpo.gov] [FR Doc No: 2016-02464]
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This section of the FEDERAL REGISTER contains documents other than rules or
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Federal Register / Vol. 81, No. 25 / Monday, February 8, 2016 /
Notices
[[Page 6501]]
DEPARTMENT OF AGRICULTURE
Animal and Plant Health Inspection Service
[Docket No. APHIS-2016-0007]
Secretary's Advisory Committee on Animal Health; Meeting
AGENCY: Animal and Plant Health Inspection Service, USDA.
ACTION: Notice of meeting.
-----------------------------------------------------------------------
SUMMARY: This is a notice to inform the public of an upcoming meeting of
the Secretary's Advisory Committee on Animal Health. The meeting is being
organized by the Animal and Plant Health Inspection Service to discuss matters
of animal health.
DATES: The meeting will be held February 23, 24, and 25, 2016, from 9 a.m.
to 5 p.m. central standard time.
ADDRESSES: The meeting will be held at the Marriott Dallas/Addison Quorum,
14901 Dallas Parkway, Dallas, TX 75254.
FOR FURTHER INFORMATION CONTACT: Mrs. R.J. Cabrera, Designated Federal
Officer, VS, APHIS, 4700 River Road Unit 34, Riverdale, MD 20737; phone (301)
851-3478; email: SACAH.Management@aphis.usda.gov.
SUPPLEMENTARY INFORMATION: The Secretary's Advisory Committee on Animal
Health (the Committee) advises the Secretary of Agriculture on matters of animal
health, including means to prevent, conduct surveillance on, monitor, control,
or eradicate animal diseases of national importance. In doing so, the Committee
will consider public health, conservation of natural resources, and the
stability of livestock economies.
Tentative topics for discussion at the meeting include:
Chronic Wasting Disease Program; One Health [cir] Zoonotic Diseases, [cir]
National List of Reportable Animal Diseases, and [cir] U.S. Department of
Agriculture Antimicrobial Resistance
Action Plan; Scrapie Program; Foot and Mouth Disease Vaccine Availability;
Emerging Disease Response; and Comprehensive Integrated Animal Health
Surveillance. A final agenda will be posted on the Committee Web site by
February 15, 2016.
Those wishing to attend the meeting in person must complete a brief
registration form by clicking on the ``SACAH Meeting Sign-up'' button on the
Committee's Web site (http://www.aphis.usda.gov/animalhealth/sacah).
Members of the public may also join the meeting via teleconference in
``listen-only'' mode. Participants who wish to listen in on the teleconference
may do so by dialing 1-800-619-4086 and then entering the public passcode,
2236462.
Due to time constraints, members of the public will not have an opportunity
to participate in the Committee's discussions. However, questions and written
statements for the Committee's consideration may be submitted up to 5 working
days before the meeting. They may be sent to SACAH.Management@aphis.usda.gov or
mailed to the person listed in this notice under FOR FURTHER INFORMATION
CONTACT. Statements filed with the Committee must include the name of the
individual listed under FOR FURTHER INFORMATION CONTACT, the docket number
listed in this notice, and specify that they pertain to the February 2016
Committee meeting.
This notice of meeting is given pursuant to section 10 of the Federal
Advisory Committee Act (5 U.S.C. App. 2).
Done in Washington, DC, this 3rd day of February 2016. Kevin Shea,
Administrator, Animal and Plant Health Inspection Service. [FR Doc. 2016-02464
Filed 2-5-16; 8:45 am] BILLING CODE 3410-34-P
Hello Mrs. R.J. Cabrera and USDA et al,
a kind and warm greetings from Bacliff, Texas.
I would kindly like to submit and comment on the Secretary's Advisory
Committee on Animal Health; Meeting [Docket No. APHIS-2016-0007].
***Chronic Wasting Disease Program; One Health [cir] Zoonotic Diseases,
[cir] National List of Reportable Animal Diseases, and [cir] U.S. Department of
Agriculture Antimicrobial Resistance
***Action Plan; Scrapie Program; Foot and Mouth Disease Vaccine
Availability; Emerging Disease Response; and Comprehensive Integrated Animal
Health Surveillance. A final agenda will be posted on the Committee Web site by
February 15, 2016.
I have wasted (it seems) a lifetime (17+ years), just about every day since
December 14, 1997, trying to warn the world about the Transmissible Spongiform
Encephalopathy TSE Prion disease aka mad cow type disease. from state to state,
county to county, country to country, the TSE Prion disease know no borders,
they know no borders, and or know no age groups. from mad cow disease BSE in the
bovine, or back to sheep or humans or deer, the same for sheep scrapie, and or
chronic wasting disease cwd of cervid, and or all the atypical strains, and yes
there are more than one strain of cwd in cervid. that’s what makes the tse prion
disease so very difficult to understand, that and the incubation period, but
once these tse prion disease start to mutate, it’s a whole new ball game. I
don’t nor have I ever stated or portrayed myself as any expert with TSE prion
disease, but I have followed the science day by day as these mad cow follies
played out starting back in 1997, when I watched my mother die from the
Heidenhain Variant of Creutzfeldt Jakob Disease, a terrible horrible thing to
see a loved one die from, and then have the feds tell you it’s not here, it’s
all spontaneous or sporadic, while watching Oprah on T.V. fighting Cactus cattle
feeders over what she had said. I about fell about of bed that night back then.
I am not anti-meat, anti-gun, anti-hunt, what I am is anti-stupid, and
there has been enough stupid to go around for everybody over the past 3 or 4
decades in handling this TSE Prion disease due to the money factor, God protect
the industry at all cost mentality. you don’t think this happens, and this is
just another conspiracy theory, then just think back to Tobacco and Asbestos,
and that long incubating killer disease, and then think if it can happen or not,
hell, it already has. this is just another fine example of lobbied corporate
politics making bad terrible bad policy, just to save the industry, to hell with
human and animal health. it’s true, I am not making this up, the BSE MRR policy
will come back to haunt every country that wanted it, and rightfully so. I know
I have been a thorn in USDA, APHIS, FSIS, FDA, CDC et al behind, but it was for
a reason, no one should have to die or be at risk from the Transmissible
Spongiform Encephalopathy TSE Prion disease, just because of corporate interest
or special interest group, because it’s a long incubation disease and to date
it’s hard for trace back or friendly fire i.e. iatrogenic, the pass if forward
mode of transmission. oh, it’s real too, just not documented much, again, due to
long incubation. the risk factors from BSE, Scrapie, and CWD are all and have
been proven to be a risk factor for humans now. all one has to to is sit down
and read the history of the science, and the most update science. or, you can
let the industry fed junk science rule the day, which is what’s happening right
now in TEXAS with CWD (like BSE in cattle in Texas), where TEXAS will change the
science to suit their need $$$ i.e. if CWD live testing is approved before the
CWD test itself is validated at 100 % validated, by validated TSE prion
scientist around the world, not the industry itself. remember, in Texas, if
you’re in the cervid business, even if you own your own game farm, you can
validate yourself via a short program, to take your own samples from suspect CWD
deer to be tested i.e., thus the OBEX only testing in Texas is very handy, to
discard some very suspect CWD positive deer, which is the case now with two
suspect cwd in captive, that were deemed not positive, due to not confirmed in
both the Obex and Lymphnoids, so it is not conclusive. case closed. hmmm, where
did I hear this before in Texas. OH YES, that was the infamous 2nd Texas mad cow
that was covered up, until scientist from around the world, and myself, wrote
the OIG the Honorable Phyllis Fong. Finally, 7 months later, that Texas mad cow
was finally confirmed, only after the BSE MRR policy was ratified, the legal
trading of the TSE Prion globally. oh, I am not making this up either ;
Thursday, October 22, 2015
*** Former Ag Secretary Ann Veneman talks women in agriculture and we talk
mad cow disease USDA and what really happened ***
if we don’t get serious about the TSE Prion disease, all of them, and what
we really need to do, and do it, it may be too late.
some of the industry claims that cwd has been here a long time and will
just die out.
I don’t believe that, and how did that work our for Scrapie (same as cwd).
if we continue to ignore the CWD TSE prion, it will only get worse.
all hunter kill cervid must be tested for CWD, this should be mandatory in
every state, and it should say it on your tags.
you can’t have one state making up a set of cwd tse prion rules based on
how they might read the science and policy there from, and not have the rest of
the states reading the science the same way and making the same policy making
decisions for the cwd tse prion, and then import and export between them. it
just does not work.
the states must get on the same page, and the only way that will happen is
to have it mandatory and regulated by the feds, however, we must make sure the
feds are on the same page with sound science, and in doing this, we must have
sound cwd tse prion policy making, from science by scientist, not by paid
lobbyist, politicians, or scientist they have in their pockets$
stop all transport of cervid and cervid carcasses from state to state, any
and all parts, and even between counties in one state where cwd risk factor is.
trucking cwd tse prion around is a real risk factor, down to the dirt on
the tires, and dirt on the clothes or shoes of any person or animal that has
been exposed to cwd tse prion.
cwd tse prion has the capabilities of exposing water tables, land, the
surrounding environment, fence line, furniture, and plants, down to the knife
and equipment you use to clean a deer or elk.
stop baiting period. the congregation of cervid by unnatural means whether
or not it’s a pile of corn or a field of planted lettuce and such, bottom line,
you congregate cervid in one place, and over time, the shedding of the CWD TSE
Prion will load up the environment, and given enough time, everything will be
exposed or contaminated.
stop urine use for scents.
stop the use of mineral blocks.
stop the feeding grounds at state parks.
stop the loophole that still allows animal protein being fed to cervid.
cwd tse prion testing must be enhanced in all states, with a large increase
in all cwd tse prion testing across the board.
scorched earth policy must be adhered to. kill everything, and test it with
validated cwd tse prion test, until a live validated test is ready, one that can
guaranty without any doubt, to be 100% in all cervid, of all age groups.
killing and field dressing a cervid in the wild has it’s risk factors for
the cwd tse prion to spread, due to environmental risk factors, if that cervid
is infected with CWD tse prion. proper carcass disposal is critical.
game farms help spread cwd, simple fact. it’s been proven. game farms are
not the only risk factor though, however, they are a big part of the problem,
history shows this.
the quarantine of cwd tse prion infected game farms must be extended to 16
years now.
the CWD LOTTO ENTITLEMENT of captive game farms where the states pays game
farms for CWD MUST BE STOPPED. if the cwd infected farm does not buy insurance
for any and all loss from CWD for them and any party that does business with
them, and or any loss to the state, and or any products there from, that’s to
bad, they should never be allowed to be permitted. in fact, for any state that
does allow game farming, urine mills, sperm mills, antler mills, velvet mills,
big high fence ranch, little low fence farm, in my opinion, it’s that states
responsibility to protect that state, thus, any states that allow these farms
and business there from, it should be mandatory before any permit is allowed,
that game farm must have enough personal insurance that would cover that farm,
any farm that does business with them, and or any products there from, and the
state, before such permit is issued. personally, I am sick and tired of all the
big ag entitlement programs, and that’s all cwd indemnity is. in fact, the USDA
CWD INDEMNITY PROGRAM, should read, THE USDA CWD ENTITLEMENT PROGRAM.
we cannot, and must not, let the industry regulate itself, especially with
the junk science they try to use. it’s just not working, and it’s been going on
long enough.
if they are not going to be science based, they must be banned.
science has told us for 3 decade or longer, that these are the things that
_might_ work, yet thanks to the industry, and government catering to industry,
regulations there from have failed, because of catering to the industry, and the
cwd tse prion agent has continued to spread during this time. a fine example is
Texas.
HIGHEST INFECTION RATE ON SEVERAL CWD CONFIRMED CAPTIVES
CHRONIC WASTING DISEASE CWD WISCONSIN Almond Deer (Buckhorn Flats) Farm
Update DECEMBER 2011
The CWD infection rate was nearly 80%, the highest ever in a North American
captive herd.
RECOMMENDATION: That the Board approve the purchase of 80 acres of land for
$465,000 for the Statewide Wildlife Habitat Program in Portage County and
approve the restrictions on public use of the site.
SUMMARY:
J Vet Diagn Invest 20:698–703 (2008)
Chronic wasting disease in a Wisconsin white-tailed deer farm
Delwyn P. Keane,1 Daniel J. Barr, Philip N. Bochsler, S. Mark Hall, Thomas
Gidlewski, Katherine I. O’Rourke, Terry R. Spraker, Michael D. Samuel
Abstract.
In September 2002, chronic wasting disease (CWD), a prion disorder of
captive and wild cervids, was diagnosed in a white-tailed deer (Odocoileus
virginianus) from a captive farm in Wisconsin. The facility was subsequently
quarantined, and in January 2006 the remaining 76 deer were depopulated. Sixty
animals (79%) were found to be positive by immunohistochemical staining for the
abnormal prion protein (PrPCWD) in at least one tissue; the prevalence of
positive staining was high even in young deer. Although none of the deer
displayed clinical signs suggestive of CWD at depopulation, 49 deer had
considerable accumulation of the abnormal prion in the medulla at the level of
the obex. Extraneural accumulation of the abnormal protein was observed in 59
deer, with accumulation in the retropharyngeal lymph node in 58 of 59 (98%), in
the tonsil in 56 of 59 (95%), and in the rectal mucosal lymphoid tissue in 48 of
58 (83%). The retina was positive in 4 deer, all with marked accumulation of
prion in the obex. One deer was considered positive for PrPCWD in the brain but
not in the extraneural tissue, a novel observation in white-tailed deer. The
infection rate in captive deer was 20- fold higher than in wild deer. Although
weakly related to infection rates in extraneural tissues, prion genotype was
strongly linked to progression of prion accumulation in the obex. Antemortem
testing by biopsy of recto– anal mucosal-associated lymphoid tissue (or other
peripheral lymphoid tissue) may be a useful adjunct to tonsil biopsy for
surveillance in captive herds at risk for CWD infection.
Key words: Cervids; chronic wasting disease; prion; transmissible
spongiform encephalopathy.
State pays farmer $298,000 for infected deer herd
Jan. 16, 2016 8:05 p.m.
The State of Wisconsin paid nearly $300,000 to the Eau Claire County farmer
whose deer herd was depopulated after it was found to be infected with chronic
wasting disease.
Rick Vojtik, owner of Fairchild Whitetails in Fairchild, received an
indemnity payment of $298,770 for 228 white-tailed deer killed on his farm,
according to officials with the Department of Agriculture, Trade and Consumer
Protection.
The money was taken from the agency's general program revenue funded by
Wisconsin taxpayers.
CHRONIC WASTING DISEASE CWD WISCONSIN Almond Deer (Buckhorn Flats) Farm
Update DECEMBER 2011
The CWD infection rate was nearly 80%, the highest ever in a North American
captive herd.
RECOMMENDATION: That the Board approve the purchase of 80 acres of land for
$465,000 for the Statewide Wildlife Habitat Program in Portage County and
approve the restrictions on public use of the site.
SUMMARY:
$298,770 + $465,000
THE CWD ENTITLEMENT PROGRAM FOR GAME FARMS MUST BE STOPPED!
IOWA CWD
Friday, February 05, 2016
IOWA Two Wild Deer Test Positive for Chronic Wasting Disease in Allamakee
County
*** TEST RESULTS FROM CAPTIVE DEER HERD WITH CHRONIC WASTING DISEASE
RELEASED 79.8 percent of the deer tested positive for the disease
DES MOINES – The Iowa Department of Agriculture and Land Stewardship today
announced that the test results from the depopulation of a quarantined captive
deer herd in north-central Iowa showed that 284 of the 356 deer, or 79.8% of the
herd, tested positive for Chronic Wasting Disease (CWD).
*** see history of this CWD blunder here ;
On June 5, 2013, DNR conducted a fence inspection, after gaining approval
from surrounding landowners, and confirmed that the fenced had been cut or
removed in at least four separate locations; that the fence had degraded and was
failing to maintain the enclosure around the Quarantined Premises in at least
one area; that at least three gates had been opened;and that deer tracks were
visible in and around one of the open areas in the sand on both sides of the
fence, evidencing movement of deer into the Quarantined Premises.
The overall incidence of clinical CWD in white-tailed deer was 82%
Species (cohort) CWD (cases/total) Incidence (%) Age at CWD death (mo)
”The occurrence of CWD must be viewed against the contest of the locations
in which it occurred. It was an incidental and unwelcome complication of the
respective wildlife research programmes. Despite it’s subsequent recognition as
a new disease of cervids, therefore justifying direct investigation, no specific
research funding was forthcoming. The USDA veiwed it as a wildlife problem and
consequently not their province!” page 26.
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF
TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
***Title: Transmission of chronic wasting disease to sentinel reindeer
(Rangifer tarandus tarandus)
Authors
item Moore, S - item Kunkle, Robert item Nicholson, Eric item Richt,
Juergen item Hamir, Amirali item Waters, Wade item Greenlee, Justin
Submitted to: American College of Veterinary Pathologists Meeting
Publication Type: Abstract Only Publication Acceptance Date: August 12, 2015
Publication Date: N/A
Technical Abstract:
Chronic wasting disease (CWD) is a naturally-occurring, fatal
neurodegenerative disease of North American cervids. Reindeer (Rangifer tarandus
tarandus) are susceptible to CWD following oral challenge, but CWD has not been
reported in free-ranging caribou (Rangifer tarandus caribou) or farmed reindeer.
Potential contact between CWD-affected cervids and Rangifer species that are
free-ranging or co-housed on farms presents a potential risk of CWD
transmission. The aims of this study were to 1) investigate the transmission of
CWD from white-tailed deer (Odocoileus virginianus; CWD-wtd), mule deer
(Odocoileus hemionus; CWD-md), or elk (Cervus elaphus nelsoni; CWD-elk) to
reindeer via the intracranial route, and 2) to assess for direct and indirect
horizontal transmission to non-inoculated sentinels. Three groups of 5 reindeer
fawns were challenged intracranially with CWD-wtd, CWD-md, or CWD-elk. Two years
after challenge of inoculated reindeer, non-inoculated control reindeer were
introduced into the same pen as the CWD-wtd inoculated reindeer (n=4) or into a
pen adjacent to the CWD-md inoculated reindeer (n=2). Reindeer were allowed to
develop clinical disease. At death/euthanasia a complete necropsy examination
was performed, including immunohistochemical testing of tissues for
disease-associated CWD prion protein (PrP-CWD). Intracranially challenged
reindeer developed clinical disease from 21 months post-inoculation (MPI).
PrP-CWD was detected in 5/6 sentinel reindeer although only 2/6 developed
clinical disease during the study period (<57 div="" mpi="">
***We have shown that reindeer are susceptible to CWD from various cervid
sources and can transmit CWD to naive reindeer both directly and indirectly.
Last Modified: 12/3/2015
***PrP-CWD was detected in 5/6 sentinel reindeer although only 2/6
developed clinical disease during the study period (<57 div="" mpi="">
***We have shown that reindeer are susceptible to CWD from various cervid
sources and can transmit CWD to naive reindeer both directly and indirectly.
Tuesday, September 29, 2015
*** Transmission of chronic wasting disease to sentinel reindeer (Rangifer
tarandus tarandus) can transmit CWD to naive reindeer both directly and
indirectly
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF
TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
CHRONIC WASTING DISEASE CWD TSE PRION AKA MAD COW TYPE DISEASE
Friday, January 01, 2016
Bayesian Modeling of Prion Disease Dynamics in Mule Deer Using Population
Monitoring and Capture-Recapture Data
Chris Geremia, Michael W. Miller, Jennifer A. Hoeting, Michael F. Antolin,
N. Thompson Hobbs PLOS x Published: October 28, 2015 DOI:
10.1371/journal.pone.0140687
Abstract
Epidemics of chronic wasting disease (CWD) of North American Cervidae have
potential to harm ecosystems and economies. We studied a migratory population of
mule deer (Odocoileus hemionus) affected by CWD for at least three decades using
a Bayesian framework to integrate matrix population and disease models with
long-term monitoring data and detailed process-level studies. We hypothesized
CWD prevalence would be stable or increase between two observation periods
during the late 1990s and after 2010, with higher CWD prevalence making deer
population decline more likely. The weight of evidence suggested a reduction in
the CWD outbreak over time, perhaps in response to intervening harvest-mediated
population reductions. Disease effects on deer population growth under current
conditions were subtle with a 72% chance that CWD depressed population growth.
With CWD, we forecasted a growth rate near one and largely stable deer
population. Disease effects appear to be moderated by timing of infection,
prolonged disease course, and locally variable infection. Long-term outcomes
will depend heavily on whether current conditions hold and high prevalence
remains a localized phenomenon.
Discussion
The protracted time-scale of the CWD outbreak is much longer than the
timespan of our research, which limits our ability to identify the true
explanation of our findings. Nonetheless, our research suggests that, at least
for the foreseeable future (e.g., decades), mule deer populations sharing the
overall survival and infection probabilities estimated from our analyses may
persist but likely will not thrive where CWD becomes established as an endemic
infectious disease.
‘’Nonetheless, our research suggests that, at least for the foreseeable
future (e.g., decades), mule deer populations sharing the overall survival and
infection probabilities estimated from our analyses may persist but likely will
not thrive where CWD becomes established as an endemic infectious disease. ‘’
*** Bayesian Modeling of Prion Disease Dynamics in Mule Deer Using
Population Monitoring and Capture-Recapture Data
‘’Mountain lions prey selectively on CWD infected deer [33] and CWD could
result in an abundance of vulnerable prey, thereby enhancing mountain lion
survival and reproduction [20].’’
please see ;
‘’preliminary results suggesting that bobcats (Lynx rufus) may be
susceptible to white-tailed deer (Odocoileus virginianus) chronic wasting
disease agent.’’
references on Feline Spongiform Encephalopathy FSE toward the bottom, see ;
Assessing Transmissible Spongiform Encephalopathy Species Barriers with an
In Vitro Prion Protein Conversion Assay
Tuesday, December 15, 2015
Chronic Wasting Disease will cause a Wyoming deer herd to go virtually
extinct in 41 years, a five-year study predicts
Study: Chronic Wasting Disease kills 19% of deer herd annually
*** Infectious agent of sheep scrapie may persist in the environment for at
least 16 years ***
Gudmundur Georgsson1, Sigurdur Sigurdarson2 and Paul Brown3
New studies on the heat resistance of hamster-adapted scrapie agent:
Threshold survival after ashing at 600°C suggests an inorganic template of
replication
The infectious agents responsible for transmissible spongiform
encephalopathy (TSE) are notoriously resistant to most physical and chemical
methods used for inactivating pathogens, including heat. It has long been
recognized, for example, that boiling is ineffective and that higher
temperatures are most efficient when combined with steam under pressure (i.e.,
autoclaving). As a means of decontamination, dry heat is used only at the
extremely high temperatures achieved during incineration, usually in excess of
600°C. It has been assumed, without proof, that incineration totally inactivates
the agents of TSE, whether of human or animal origin.
Prion Infected Meat-and-Bone Meal Is Still Infectious after Biodiesel
Production
Histochemical analysis of hamster brains inoculated with the solid residue
showed typical spongiform degeneration and vacuolation. Re-inoculation of these
brains into a new cohort of hamsters led to onset of clinical scrapie symptoms
within 75 days, suggesting that the specific infectivity of the prion protein
was not changed during the biodiesel process. The biodiesel reaction cannot be
considered a viable prion decontamination method for MBM, although we observed
increased survival time of hamsters and reduced infectivity greater than 6 log
orders in the solid MBM residue. Furthermore, results from our study compare for
the first time prion detection by Western Blot versus an infectivity bioassay
for analysis of biodiesel reaction products. We could show that biochemical
analysis alone is insufficient for detection of prion infectivity after a
biodiesel process.
Detection of protease-resistant cervid prion protein in water from a
CWD-endemic area
The data presented here demonstrate that sPMCA can detect low levels of
PrPCWD in the environment, corroborate previous biological and experimental data
suggesting long term persistence of prions in the environment2,3 and imply that
PrPCWD accumulation over time may contribute to transmission of CWD in areas
where it has been endemic for decades. This work demonstrates the utility of
sPMCA to evaluate other environmental water sources for PrPCWD, including
smaller bodies of water such as vernal pools and wallows, where large numbers of
cervids congregate and into which prions from infected animals may be shed and
concentrated to infectious levels.
A Quantitative Assessment of the Amount of Prion Diverted to Category 1
Materials and Wastewater During Processing
Keywords:Abattoir;bovine spongiform encephalopathy;QRA;scrapie;TSE
In this article the development and parameterization of a quantitative
assessment is described that estimates the amount of TSE infectivity that is
present in a whole animal carcass (bovine spongiform encephalopathy [BSE] for
cattle and classical/atypical scrapie for sheep and lambs) and the amounts that
subsequently fall to the floor during processing at facilities that handle
specified risk material (SRM). BSE in cattle was found to contain the most oral
doses, with a mean of 9864 BO ID50s (310, 38840) in a whole carcass compared to
a mean of 1851 OO ID50s (600, 4070) and 614 OO ID50s (155, 1509) for a sheep
infected with classical and atypical scrapie, respectively. Lambs contained the
least infectivity with a mean of 251 OO ID50s (83, 548) for classical scrapie
and 1 OO ID50s (0.2, 2) for atypical scrapie. The highest amounts of infectivity
falling to the floor and entering the drains from slaughtering a whole carcass
at SRM facilities were found to be from cattle infected with BSE at rendering
and large incineration facilities with 7.4 BO ID50s (0.1, 29), intermediate
plants and small incinerators with a mean of 4.5 BO ID50s (0.1, 18), and
collection centers, 3.6 BO ID50s (0.1, 14). The lowest amounts entering drains
are from lambs infected with classical and atypical scrapie at intermediate
plants and atypical scrapie at collection centers with a mean of 3 × 10−7 OO
ID50s (2 × 10−8, 1 × 10−6) per carcass. The results of this model provide key
inputs for the model in the companion paper published here.
*** Spraker suggested an interesting explanation for the occurrence of CWD.
The deer pens at the Foot Hills Campus were built some 30-40 years ago by a Dr.
Bob Davis. At or abut that time, allegedly, some scrapie work was conducted at
this site. When deer were introduced to the pens they occupied ground that had
previously been occupied by sheep.
PL1
Using in vitro prion replication for high sensitive detection of prions and
prionlike proteins and for understanding mechanisms of transmission.
Claudio Soto
Mitchell Center for Alzheimer's diseases and related Brain disorders,
Department of Neurology, University of Texas Medical School at Houston.
Prion and prion-like proteins are misfolded protein aggregates with the
ability to selfpropagate to spread disease between cells, organs and in some
cases across individuals. I n T r a n s m i s s i b l e s p o n g i f o r m
encephalopathies (TSEs), prions are mostly composed by a misfolded form of the
prion protein (PrPSc), which propagates by transmitting its misfolding to the
normal prion protein (PrPC). The availability of a procedure to replicate prions
in the laboratory may be important to study the mechanism of prion and
prion-like spreading and to develop high sensitive detection of small quantities
of misfolded proteins in biological fluids, tissues and environmental samples.
Protein Misfolding Cyclic Amplification (PMCA) is a simple, fast and efficient
methodology to mimic prion replication in the test tube. PMCA is a platform
technology that may enable amplification of any prion-like misfolded protein
aggregating through a seeding/nucleation process. In TSEs, PMCA is able to
detect the equivalent of one single molecule of infectious PrPSc and propagate
prions that maintain high infectivity, strain properties and species
specificity. Using PMCA we have been able to detect PrPSc in blood and urine of
experimentally infected animals and humans affected by vCJD with high
sensitivity and specificity. Recently, we have expanded the principles of PMCA
to amplify amyloid-beta (Aβ) and alphasynuclein (α-syn) aggregates implicated in
Alzheimer's and Parkinson's diseases, respectively. Experiments are ongoing to
study the utility of this technology to detect Aβ and α-syn aggregates in
samples of CSF and blood from patients affected by these diseases.
=========================
***Recently, we have been using PMCA to study the role of environmental
prion contamination on the horizontal spreading of TSEs. These experiments have
focused on the study of the interaction of prions with plants and
environmentally relevant surfaces. Our results show that plants (both leaves and
roots) bind tightly to prions present in brain extracts and excreta (urine and
feces) and retain even small quantities of PrPSc for long periods of time.
Strikingly, ingestion of prioncontaminated leaves and roots produced disease
with a 100% attack rate and an incubation period not substantially longer than
feeding animals directly with scrapie brain homogenate. Furthermore, plants can
uptake prions from contaminated soil and transport them to different parts of
the plant tissue (stem and leaves). Similarly, prions bind tightly to a variety
of environmentally relevant surfaces, including stones, wood, metals, plastic,
glass, cement, etc. Prion contaminated surfaces efficiently transmit prion
disease when these materials were directly injected into the brain of animals
and strikingly when the contaminated surfaces were just placed in the animal
cage. These findings demonstrate that environmental materials can efficiently
bind infectious prions and act as carriers of infectivity, suggesting that they
may play an important role in the horizontal transmission of the disease.
========================
Since its invention 13 years ago, PMCA has helped to answer fundamental
questions of prion propagation and has broad applications in research areas
including the food industry, blood bank safety and human and veterinary disease
diagnosis.
see ;
with CWD TSE Prions, I am not sure there is any absolute yet, other than
what we know with transmission studies, and we know tse prion kill, and tse
prion are bad. science shows to date, that indeed soil, dirt, some better than
others, can act as a carrier. same with objects, farm furniture. take it with
how ever many grains of salt you wish, or not. if load factor plays a role in
the end formula, then everything should be on the table, in my opinion. see
;
***Recently, we have been using PMCA to study the role of environmental
prion contamination on the horizontal spreading of TSEs. These experiments have
focused on the study of the interaction of prions with plants and
environmentally relevant surfaces. Our results show that plants (both leaves and
roots) bind tightly to prions present in brain extracts and excreta (urine and
feces) and retain even small quantities of PrPSc for long periods of time.
Strikingly, ingestion of prioncontaminated leaves and roots produced disease
with a 100% attack rate and an incubation period not substantially longer than
feeding animals directly with scrapie brain homogenate. Furthermore, plants can
uptake prions from contaminated soil and transport them to different parts of
the plant tissue (stem and leaves). Similarly, prions bind tightly to a variety
of environmentally relevant surfaces, including stones, wood, metals, plastic,
glass, cement, etc. Prion contaminated surfaces efficiently transmit prion
disease when these materials were directly injected into the brain of animals
and strikingly when the contaminated surfaces were just placed in the animal
cage. These findings demonstrate that environmental materials can efficiently
bind infectious prions and act as carriers of infectivity, suggesting that they
may play an important role in the horizontal transmission of the disease.
Since its invention 13 years ago, PMCA has helped to answer fundamental
questions of prion propagation and has broad applications in research areas
including the food industry, blood bank safety and human and veterinary disease
diagnosis.
see ;
Oral Transmissibility of Prion Disease Is Enhanced by Binding to Soil
Particles
Author Summary
Transmissible spongiform encephalopathies (TSEs) are a group of incurable
neurological diseases likely caused by a misfolded form of the prion protein.
TSEs include scrapie in sheep, bovine spongiform encephalopathy (‘‘mad cow’’
disease) in cattle, chronic wasting disease in deer and elk, and
Creutzfeldt-Jakob disease in humans. Scrapie and chronic wasting disease are
unique among TSEs because they can be transmitted between animals, and the
disease agents appear to persist in environments previously inhabited by
infected animals. Soil has been hypothesized to act as a reservoir of
infectivity and to bind the infectious agent. In the current study, we orally
dosed experimental animals with a common clay mineral, montmorillonite, or whole
soils laden with infectious prions, and compared the transmissibility to unbound
agent. We found that prions bound to montmorillonite and whole soils remained
orally infectious, and, in most cases, increased the oral transmission of
disease compared to the unbound agent. The results presented in this study
suggest that soil may contribute to environmental spread of TSEs by increasing
the transmissibility of small amounts of infectious agent in the
environment.
tse prion soil
Wednesday, December 16, 2015
Objects in contact with classical scrapie sheep act as a reservoir for
scrapie transmission
The sources of dust borne prions are unknown but it seems reasonable to
assume that faecal, urine, skin, parturient material and saliva-derived prions
may contribute to this mobile environmental reservoir of infectivity. This work
highlights a possible transmission route for scrapie within the farm
environment, and this is likely to be paralleled in CWD which shows strong
similarities with scrapie in terms of prion dissemination and disease
transmission. The data indicate that the presence of scrapie prions in dust is
likely to make the control of these diseases a considerable challenge.
>>>Particle-associated PrPTSE molecules may migrate from locations
of deposition via transport processes affecting soil particles, including
entrainment in and movement with air and overland flow. <<<
Fate of Prions in Soil: A Review
Christen B. Smith, Clarissa J. Booth, and Joel A. Pedersen*
Several reports have shown that prions can persist in soil for several
years. Significant interest remains in developing methods that could be applied
to degrade PrPTSE in naturally contaminated soils. Preliminary research suggests
that serine proteases and the microbial consortia in stimulated soils and
compost may partially degrade PrPTSE. Transition metal oxides in soil (viz.
manganese oxide) may also mediate prion inactivation. Overall, the effect of
prion attachment to soil particles on its persistence in the environment is not
well understood, and additional study is needed to determine its implications on
the environmental transmission of scrapie and CWD.
P.161: Prion soil binding may explain efficient horizontal CWD transmission
Conclusion. Silty clay loam exhibits highly efficient prion binding,
inferring a durable environmental reservoir, and an efficient mechanism for
indirect horizontal CWD transmission.
Wednesday, December 16, 2015
Objects in contact with classical scrapie sheep act as a reservoir for
scrapie transmission
Objects in contact with classical scrapie sheep act as a reservoir for
scrapie transmission
Timm Konold1*, Stephen A. C. Hawkins2, Lisa C. Thurston3, Ben C. Maddison4,
Kevin C. Gough5, Anthony Duarte1 and Hugh A. Simmons1
1 Animal Sciences Unit, Animal and Plant Health Agency Weybridge,
Addlestone, UK, 2 Pathology Department, Animal and Plant Health Agency
Weybridge, Addlestone, UK, 3 Surveillance and Laboratory Services, Animal and
Plant Health Agency Penrith, Penrith, UK, 4 ADAS UK, School of Veterinary
Medicine and Science, University of Nottingham, Sutton Bonington, UK, 5 School
of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington,
UK
Classical scrapie is an environmentally transmissible prion disease of
sheep and goats. Prions can persist and remain potentially infectious in the
environment for many years and thus pose a risk of infecting animals after
re-stocking. In vitro studies using serial protein misfolding cyclic
amplification (sPMCA) have suggested that objects on a scrapie affected sheep
farm could contribute to disease transmission. This in vivo study aimed to
determine the role of field furniture (water troughs, feeding troughs, fencing,
and other objects that sheep may rub against) used by a scrapie-infected sheep
flock as a vector for disease transmission to scrapie-free lambs with the prion
protein genotype VRQ/VRQ, which is associated with high susceptibility to
classical scrapie. When the field furniture was placed in clean accommodation,
sheep became infected when exposed to either a water trough (four out of five)
or to objects used for rubbing (four out of seven). This field furniture had
been used by the scrapie-infected flock 8 weeks earlier and had previously been
shown to harbor scrapie prions by sPMCA. Sheep also became infected (20 out of
23) through exposure to contaminated field furniture placed within pasture not
used by scrapie-infected sheep for 40 months, even though swabs from this
furniture tested negative by PMCA. This infection rate decreased (1 out of 12)
on the same paddock after replacement with clean field furniture. Twelve grazing
sheep exposed to field furniture not in contact with scrapie-infected sheep for
18 months remained scrapie free. The findings of this study highlight the role
of field furniture used by scrapie-infected sheep to act as a reservoir for
disease re-introduction although infectivity declines considerably if the field
furniture has not been in contact with scrapie-infected sheep for several
months. PMCA may not be as sensitive as VRQ/VRQ sheep to test for environmental
contamination.
snip...
Discussion
Classical scrapie is an environmentally transmissible disease because it
has been reported in naïve, supposedly previously unexposed sheep placed in
pastures formerly occupied by scrapie-infected sheep (4, 19, 20). Although the
vector for disease transmission is not known, soil is likely to be an important
reservoir for prions (2) where – based on studies in rodents – prions can adhere
to minerals as a biologically active form (21) and remain infectious for more
than 2 years (22). Similarly, chronic wasting disease (CWD) has re-occurred in
mule deer housed in paddocks used by infected deer 2 years earlier, which was
assumed to be through foraging and soil consumption (23).
Our study suggested that the risk of acquiring scrapie infection was
greater through exposure to contaminated wooden, plastic, and metal surfaces via
water or food troughs, fencing, and hurdles than through grazing. Drinking from
a water trough used by the scrapie flock was sufficient to cause infection in
sheep in a clean building. Exposure to fences and other objects used for rubbing
also led to infection, which supported the hypothesis that skin may be a vector
for disease transmission (9). The risk of these objects to cause infection was
further demonstrated when 87% of 23 sheep presented with PrPSc in lymphoid
tissue after grazing on one of the paddocks, which contained metal hurdles, a
metal lamb creep and a water trough in contact with the scrapie flock up to 8
weeks earlier, whereas no infection had been demonstrated previously in sheep
grazing on this paddock, when equipped with new fencing and field furniture.
When the contaminated furniture and fencing were removed, the infection rate
dropped significantly to 8% of 12 sheep, with soil of the paddock as the most
likely source of infection caused by shedding of prions from the
scrapie-infected sheep in this paddock up to a week earlier.
This study also indicated that the level of contamination of field
furniture sufficient to cause infection was dependent on two factors: stage of
incubation period and time of last use by scrapie-infected sheep. Drinking from
a water trough that had been used by scrapie sheep in the predominantly
pre-clinical phase did not appear to cause infection, whereas infection was
shown in sheep drinking from the water trough used by scrapie sheep in the later
stage of the disease. It is possible that contamination occurred through
shedding of prions in saliva, which may have contaminated the surface of the
water trough and subsequently the water when it was refilled. Contamination
appeared to be sufficient to cause infection only if the trough was in contact
with sheep that included clinical cases. Indeed, there is an increased risk of
bodily fluid infectivity with disease progression in scrapie (24) and CWD (25)
based on PrPSc detection by sPMCA. Although ultraviolet light and heat under
natural conditions do not inactivate prions (26), furniture in contact with the
scrapie flock, which was assumed to be sufficiently contaminated to cause
infection, did not act as vector for disease if not used for 18 months, which
suggest that the weathering process alone was sufficient to inactivate prions.
PrPSc detection by sPMCA is increasingly used as a surrogate for
infectivity measurements by bioassay in sheep or mice. In this reported study,
however, the levels of PrPSc present in the environment were below the limit of
detection of the sPMCA method, yet were still sufficient to cause infection of
in-contact animals. In the present study, the outdoor objects were removed from
the infected flock 8 weeks prior to sampling and were positive by sPMCA at very
low levels (2 out of 37 reactions). As this sPMCA assay also yielded 2 positive
reactions out of 139 in samples from the scrapie-free farm, the sPMCA assay
could not detect PrPSc on any of the objects above the background of the assay.
False positive reactions with sPMCA at a low frequency associated with de novo
formation of infectious prions have been reported (27, 28). This is in contrast
to our previous study where we demonstrated that outdoor objects that had been
in contact with the scrapie-infected flock up to 20 days prior to sampling
harbored PrPSc that was detectable by sPMCA analysis [4 out of 15 reactions
(12)] and was significantly more positive by the assay compared to analogous
samples from the scrapie-free farm. This discrepancy could be due to the use of
a different sPMCA substrate between the studies that may alter the efficiency of
amplification of the environmental PrPSc. In addition, the present study had a
longer timeframe between the objects being in contact with the infected flock
and sampling, which may affect the levels of extractable PrPSc. Alternatively,
there may be potentially patchy contamination of this furniture with PrPSc,
which may have been missed by swabbing. The failure of sPMCA to detect
CWD-associated PrP in saliva from clinically affected deer despite confirmation
of infectivity in saliva-inoculated transgenic mice was associated with as yet
unidentified inhibitors in saliva (29), and it is possible that the sensitivity
of sPMCA is affected by other substances in the tested material. In addition,
sampling of amplifiable PrPSc and subsequent detection by sPMCA may be more
difficult from furniture exposed to weather, which is supported by the
observation that PrPSc was detected by sPMCA more frequently in indoor than
outdoor furniture (12). A recent experimental study has demonstrated that
repeated cycles of drying and wetting of prion-contaminated soil, equivalent to
what is expected under natural weathering conditions, could reduce PMCA
amplification efficiency and extend the incubation period in hamsters inoculated
with soil samples (30). This seems to apply also to this study even though the
reduction in infectivity was more dramatic in the sPMCA assays than in the sheep
model. Sheep were not kept until clinical end-point, which would have enabled us
to compare incubation periods, but the lack of infection in sheep exposed to
furniture that had not been in contact with scrapie sheep for a longer time
period supports the hypothesis that prion degradation and subsequent loss of
infectivity occurs even under natural conditions.
In conclusion, the results in the current study indicate that removal of
furniture that had been in contact with scrapie-infected animals should be
recommended, particularly since cleaning and decontamination may not effectively
remove scrapie infectivity (31), even though infectivity declines considerably
if the pasture and the field furniture have not been in contact with
scrapie-infected sheep for several months. As sPMCA failed to detect PrPSc in
furniture that was subjected to weathering, even though exposure led to
infection in sheep, this method may not always be reliable in predicting the
risk of scrapie infection through environmental contamination. These results
suggest that the VRQ/VRQ sheep model may be more sensitive than sPMCA for the
detection of environmentally associated scrapie, and suggest that extremely low
levels of scrapie contamination are able to cause infection in susceptible sheep
genotypes.
Keywords: classical scrapie, prion, transmissible spongiform
encephalopathy, sheep, field furniture, reservoir, serial protein misfolding
cyclic amplification
Wednesday, December 16, 2015
*** Objects in contact with classical scrapie sheep act as a reservoir for
scrapie transmission ***
Circulation of prions within dust on a scrapie affected farm
Kevin C Gough1, Claire A Baker2, Hugh A Simmons3, Steve A Hawkins3 and Ben
C Maddison2*
Abstract
Prion diseases are fatal neurological disorders that affect humans and
animals. Scrapie of sheep/goats and Chronic Wasting Disease (CWD) of deer/elk
are contagious prion diseases where environmental reservoirs have a direct link
to the transmission of disease. Using protein misfolding cyclic amplification we
demonstrate that scrapie PrPSc can be detected within circulating dusts that are
present on a farm that is naturally contaminated with sheep scrapie. The
presence of infectious scrapie within airborne dusts may represent a possible
route of infection and illustrates the difficulties that may be associated with
the effective decontamination of such scrapie affected premises.
snip...
Discussion
We present biochemical data illustrating the airborne movement of scrapie
containing material within a contaminated farm environment. We were able to
detect scrapie PrPSc within extracts from dusts collected over a 70 day period,
in the absence of any sheep activity. We were also able to detect scrapie PrPSc
within dusts collected within pasture at 30 m but not at 60 m distance away from
the scrapie contaminated buildings, suggesting that the chance of contamination
of pasture by scrapie contaminated dusts decreases with distance from
contaminated farm buildings. PrPSc amplification by sPMCA has been shown to
correlate with infectivity and amplified products have been shown to be
infectious [14,15]. These experiments illustrate the potential for low dose
scrapie infectivity to be present within such samples. We estimate low ng levels
of scrapie positive brain equivalent were deposited per m2 over 70 days, in a
barn previously occupied by sheep affected with scrapie. This movement of dusts
and the accumulation of low levels of scrapie infectivity within this
environment may in part explain previous observations where despite stringent
pen decontamination regimens healthy lambs still became scrapie infected after
apparent exposure from their environment alone [16]. The presence of sPMCA
seeding activity and by inference, infectious prions within dusts, and their
potential for airborne dissemination is highly novel and may have implications
for the spread of scrapie within infected premises. The low level circulation
and accumulation of scrapie prion containing dust material within the farm
environment will likely impede the efficient decontamination of such scrapie
contaminated buildings unless all possible reservoirs of dust are removed.
Scrapie containing dusts could possibly infect animals during feeding and
drinking, and respiratory and conjunctival routes may also be involved. It has
been demonstrated that scrapie can be efficiently transmitted via the nasal
route in sheep [17], as is also the case for CWD in both murine models and in
white tailed deer [18-20].
The sources of dust borne prions are unknown but it seems reasonable to
assume that faecal, urine, skin, parturient material and saliva-derived prions
may contribute to this mobile environmental reservoir of infectivity. This work
highlights a possible transmission route for scrapie within the farm
environment, and this is likely to be paralleled in CWD which shows strong
similarities with scrapie in terms of prion dissemination and disease
transmission. The data indicate that the presence of scrapie prions in dust is
likely to make the control of these diseases a considerable challenge.
Friday, December 14, 2012
DEFRA U.K. What is the risk of Chronic Wasting Disease CWD being introduced
into Great Britain? A Qualitative Risk Assessment October 2012
snip...
In the USA, under the Food and Drug Administration’s BSE Feed Regulation
(21 CFR 589.2000) most material (exceptions include milk, tallow, and gelatin)
from deer and elk is prohibited for use in feed for ruminant animals. With
regards to feed for non-ruminant animals, under FDA law, CWD positive deer may
not be used for any animal feed or feed ingredients. For elk and deer considered
at high risk for CWD, the FDA recommends that these animals do not enter the
animal feed system. However, this recommendation is guidance and not a
requirement by law.
Animals considered at high risk for CWD include:
1) animals from areas declared to be endemic for CWD and/or to be CWD
eradication zones and
2) deer and elk that at some time during the 60-month period prior to
slaughter were in a captive herd that contained a CWD-positive animal.
Therefore, in the USA, materials from cervids other than CWD positive
animals may be used in animal feed and feed ingredients for non-ruminants.
The amount of animal PAP that is of deer and/or elk origin imported from
the USA to GB can not be determined, however, as it is not specified in TRACES.
It may constitute a small percentage of the 8412 kilos of non-fish origin
processed animal proteins that were imported from US into GB in 2011.
Overall, therefore, it is considered there is a __greater than negligible
risk___ that (nonruminant) animal feed and pet food containing deer and/or elk
protein is imported into GB.
There is uncertainty associated with this estimate given the lack of data
on the amount of deer and/or elk protein possibly being imported in these
products.
snip...
36% in 2007 (Almberg et al., 2011). In such areas, population declines of
deer of up to 30 to 50% have been observed (Almberg et al., 2011). In areas of
Colorado, the prevalence can be as high as 30% (EFSA, 2011). The clinical signs
of CWD in affected adults are weight loss and behavioural changes that can span
weeks or months (Williams, 2005). In addition, signs might include excessive
salivation, behavioural alterations including a fixed stare and changes in
interaction with other animals in the herd, and an altered stance (Williams,
2005). These signs are indistinguishable from cervids experimentally infected
with bovine spongiform encephalopathy (BSE). Given this, if CWD was to be
introduced into countries with BSE such as GB, for example, infected deer
populations would need to be tested to differentiate if they were infected with
CWD or BSE to minimise the risk of BSE entering the human food-chain via
affected venison.
snip...
The rate of transmission of CWD has been reported to be as high as 30% and
can approach 100% among captive animals in endemic areas (Safar et al.,
2008).
snip...
In summary, in endemic areas, there is a medium probability that the soil
and surrounding environment is contaminated with CWD prions and in a
bioavailable form. In rural areas where CWD has not been reported and deer are
present, there is a greater than negligible risk the soil is contaminated with
CWD prion.
snip...
In summary, given the volume of tourists, hunters and servicemen moving
between GB and North America, the probability of at least one person travelling
to/from a CWD affected area and, in doing so, contaminating their clothing,
footwear and/or equipment prior to arriving in GB is greater than negligible.
For deer hunters, specifically, the risk is likely to be greater given the
increased contact with deer and their environment. However, there is significant
uncertainty associated with these estimates.
snip...
Therefore, it is considered that farmed and park deer may have a higher
probability of exposure to CWD transferred to the environment than wild deer
given the restricted habitat range and higher frequency of contact with tourists
and returning GB residents.
snip...
Saturday, January 31, 2015
European red deer (Cervus elaphus elaphus) are susceptible to Bovine
Spongiform Encephalopathy BSE by Oral Alimentary route
I strenuously once again urge the FDA and its industry constituents, to
make it MANDATORY that all ruminant feed be banned to all ruminants, and this
should include all cervids as soon as possible for the following
reasons...
======
In the USA, under the Food and Drug Administrations BSE Feed Regulation (21
CFR 589.2000) most material (exceptions include milk, tallow, and gelatin) from
deer and elk is prohibited for use in feed for ruminant animals. With regards to
feed for non-ruminant animals, under FDA law, CWD positive deer may not be used
for any animal feed or feed ingredients. For elk and deer considered at high
risk for CWD, the FDA recommends that these animals do not enter the animal feed
system.
***However, this recommendation is guidance and not a requirement by law.
======
31 Jan 2015 at 20:14 GMT
*** Ruminant feed ban for cervids in the United States? ***
31 Jan 2015 at 20:14 GMT
see Singeltary comment ;
*** Singeltary reply ; Molecular, Biochemical and Genetic Characteristics
of BSE in Canada Singeltary reply ;
*** It also suggests a similar cause or source for atypical BSE in these
countries. ***
Discussion: The C, L and H type BSE cases in Canada exhibit molecular
characteristics similar to those described for classical and atypical BSE cases
from Europe and Japan.
*** This supports the theory that the importation of BSE contaminated
feedstuff is the source of C-type BSE in Canada.
*** It also suggests a similar cause or source for atypical BSE in these
countries. ***
see page 176 of 201 pages...tss
***atypical spontaneous BSE in France LOL***
FRANCE STOPS TESTING FOR MAD COW DISEASE BSE, and here’s why, to many
spontaneous events of mad cow disease $$$
***so 20 cases of atypical BSE in France, compared to the remaining 40
cases in the remaining 12 Countries, divided by the remaining 12 Countries,
about 3+ cases per country, besides Frances 20 cases. you cannot explain this
away with any spontaneous BSe. ...TSS
Sunday, October 5, 2014
France stops BSE testing for Mad Cow Disease
10 years post mad cow feed ban August 1997
10,000,000+ LBS. of PROHIBITED BANNED MAD COW FEED I.E. BLOOD LACED MBM IN
COMMERCE USA 2007
Date: March 21, 2007 at 2:27 pm PST
RECALLS AND FIELD CORRECTIONS: VETERINARY MEDICINES -- CLASS II
PRODUCT
Bulk cattle feed made with recalled Darling's 85% Blood Meal, Flash Dried,
Recall # V-024-2007
CODE
Cattle feed delivered between 01/12/2007 and 01/26/2007
RECALLING FIRM/MANUFACTURER
Pfeiffer, Arno, Inc, Greenbush, WI. by conversation on February 5,
2007.
Firm initiated recall is ongoing.
REASON
Blood meal used to make cattle feed was recalled because it was cross-
contaminated with prohibited bovine meat and bone meal that had been
manufactured on common equipment and labeling did not bear cautionary BSE
statement.
VOLUME OF PRODUCT IN COMMERCE
42,090 lbs.
DISTRIBUTION
WI
___________________________________
PRODUCT
Custom dairy premix products: MNM ALL PURPOSE Pellet, HILLSIDE/CDL Prot-
Buffer Meal, LEE, M.-CLOSE UP PX Pellet, HIGH DESERT/ GHC LACT Meal, TATARKA, M
CUST PROT Meal, SUNRIDGE/CDL PROTEIN Blend, LOURENZO, K PVM DAIRY Meal, DOUBLE B
DAIRY/GHC LAC Mineral, WEST PIONT/GHC CLOSEUP Mineral, WEST POINT/GHC LACT Meal,
JENKS, J/COMPASS PROTEIN Meal, COPPINI - 8# SPECIAL DAIRY Mix, GULICK, L-LACT
Meal (Bulk), TRIPLE J - PROTEIN/LACTATION, ROCK CREEK/GHC MILK Mineral,
BETTENCOURT/GHC S.SIDE MK-MN, BETTENCOURT #1/GHC MILK MINR, V&C DAIRY/GHC
LACT Meal, VEENSTRA, F/GHC LACT Meal, SMUTNY, A- BYPASS ML W/SMARTA, Recall #
V-025-2007
CODE
The firm does not utilize a code - only shipping documentation with
commodity and weights identified.
RECALLING FIRM/MANUFACTURER
Rangen, Inc, Buhl, ID, by letters on February 13 and 14, 2007. Firm
initiated recall is complete.
REASON
Products manufactured from bulk feed containing blood meal that was cross
contaminated with prohibited meat and bone meal and the labeling did not bear
cautionary BSE statement.
VOLUME OF PRODUCT IN COMMERCE
9,997,976 lbs.
DISTRIBUTION
ID and NV
END OF ENFORCEMENT REPORT FOR MARCH 21, 2007
16 years post mad cow feed ban August 1997
2013
Sunday, December 15, 2013
FDA PART 589 -- SUBSTANCES PROHIBITED FROM USE IN ANIMAL FOOD OR FEED
VIOLATIONS OFFICIAL ACTION INDICATED OIA UPDATE DECEMBER 2013 UPDATE
17 years post mad cow feed ban August 1997
Monday, October 26, 2015
FDA PART 589 -- SUBSTANCES PROHIBITED FROM USE IN ANIMAL FOOD OR FEED
VIOLATIONS OFFICIAL ACTION INDICATED OIA UPDATE October 2015
Tuesday, December 23, 2014
FDA PART 589 -- SUBSTANCES PROHIBITED FROM USE IN ANIMAL FOOD OR
FEEDVIOLATIONS OFFICIAL ACTION INDICATED OAI UPDATE DECEMBER 2014 BSE TSE PRION
P04.27
Experimental BSE Infection of Non-human Primates: Efficacy of the Oral
Route
Holznagel, E1; Yutzy, B1; Deslys, J-P2; Lasmézas, C2; Pocchiari, M3;
Ingrosso, L3; Bierke, P4; Schulz-Schaeffer, W5; Motzkus, D6; Hunsmann, G6;
Löwer, J1 1Paul-Ehrlich-Institut, Germany; 2Commissariat à l´Energie Atomique,
France; 3Instituto Superiore di Sanità, Italy; 4Swedish Institute for Infectious
Disease control, Sweden; 5Georg August University, Germany; 6German Primate
Center, Germany
Background:
In 2001, a study was initiated in primates to assess the risk for humans to
contract BSE through contaminated food. For this purpose, BSE brain was titrated
in cynomolgus monkeys.
Aims:
The primary objective is the determination of the minimal infectious dose
(MID50) for oral exposure to BSE in a simian model, and, by in doing this, to
assess the risk for humans. Secondly, we aimed at examining the course of the
disease to identify possible biomarkers.
Methods:
Groups with six monkeys each were orally dosed with lowering amounts of BSE
brain: 16g, 5g, 0.5g, 0.05g, and 0.005g. In a second titration study, animals
were intracerebrally (i.c.) dosed (50, 5, 0.5, 0.05, and 0.005 mg).
Results:
In an ongoing study, a considerable number of high-dosed macaques already
developed simian vCJD upon oral or intracerebral exposure or are at the onset of
the clinical phase. However, there are differences in the clinical course
between orally and intracerebrally infected animals that may influence the
detection of biomarkers.
Conclusions:
Simian vCJD can be easily triggered in cynomolgus monkeys on the oral route
using less than 5 g BSE brain homogenate. The difference in the incubation
period between 5 g oral and 5 mg i.c. is only 1 year (5 years versus 4 years).
However, there are rapid progressors among orally dosed monkeys that develop
simian v CJD as fast as intracerebrally inoculated animals.
The work referenced was performed in partial fulfillment of the study “BSE
in primates“ supported by the EU (QLK1-2002-01096).
Simian vCJD can be easily triggered in cynomolgus monkeys on the oral route
using less than 5 g BSE brain homogenate.
look at the table and you'll see that as little as 1 mg (or 0.001 gm)
caused 7% (1 of 14) of the cows to come down with BSE;
Risk of oral infection with bovine spongiform encephalopathy agent in
primates
Corinne Ida Lasmézas, Emmanuel Comoy, Stephen Hawkins, Christian Herzog,
Franck Mouthon, Timm Konold, Frédéric Auvré, Evelyne Correia, Nathalie
Lescoutra-Etchegaray, Nicole Salès, Gerald Wells, Paul Brown, Jean-Philippe
Deslys Summary The uncertain extent of human exposure to bovine spongiform
encephalopathy (BSE)--which can lead to variant Creutzfeldt-Jakob disease
(vCJD)--is compounded by incomplete knowledge about the efficiency of oral
infection and the magnitude of any bovine-to-human biological barrier to
transmission. We therefore investigated oral transmission of BSE to non-human
primates. We gave two macaques a 5 g oral dose of brain homogenate from a
BSE-infected cow. One macaque developed vCJD-like neurological disease 60 months
after exposure, whereas the other remained free of disease at 76 months. On the
basis of these findings and data from other studies, we made a preliminary
estimate of the food exposure risk for man, which provides additional assurance
that existing public health measures can prevent transmission of BSE to
man.
snip...
BSE bovine brain inoculum
100 g 10 g 5 g 1 g 100 mg 10 mg 1 mg 0·1 mg 0·01 mg
Primate (oral route)* 1/2 (50%)
Cattle (oral route)* 10/10 (100%) 7/9 (78%) 7/10 (70%) 3/15 (20%) 1/15 (7%)
1/15 (7%)
RIII mice (ic ip route)* 17/18 (94%) 15/17 (88%) 1/14 (7%)
PrPres biochemical detection
The comparison is made on the basis of calibration of the bovine inoculum
used in our study with primates against a bovine brain inoculum with a similar
PrPres concentration that was
inoculated into mice and cattle.8 *Data are number of animals
positive/number of animals surviving at the time of clinical onset of disease in
the first positive animal (%). The accuracy of
bioassays is generally judged to be about plus or minus 1 log. ic
ip=intracerebral and intraperitoneal.
Table 1: Comparison of transmission rates in primates and cattle infected
orally with similar BSE brain inocula
Published online January 27, 2005
Calves were challenged by mouth with homogenised brain from confirmed cases
of BSE. Some received 300g (3 doses of 100g), some 100g, 10g or 1g. They were
then left to develop BSE, but were not subjected to the normal stresses that
they might have encountered in a dairy herd. Animals in all four groups
developed BSE. There has been a considerable spread of incubation period in some
of the groups, but it appears as if those in the 1 and 10g challenge groups most
closely fit the picture of incubation periods seen in the epidemic. Experiments
in progress indicate that oral infection can occur in some animals with doses as
low as 0.01g and 0.001g. .........
It is clear that the designing scientists must also have shared Mr
Bradley's surprise at the results because all the dose levels right down to 1
gram triggered infection.
6. It also appears to me that Mr Bradley's answer (that it would take less
than say 100 grams) was probably given with the benefit of hindsight;
particularly if one considers that later in the same answer Mr Bradley expresses
his surprise that it could take as little of 1 gram of brain to cause BSE by the
oral route within the same species. This information did not become available
until the "attack rate" experiment had been completed in 1995/96. This was a
titration experiment designed to ascertain the infective dose. A range of
dosages was used to ensure that the actual result was within both a lower and an
upper limit within the study and the designing scientists would not have
expected all the dose levels to trigger infection. The dose ranges chosen by the
most informed scientists at that time ranged from 1 gram to three times one
hundred grams. It is clear that the designing scientists must have also shared
Mr Bradley's surprise at the results because all the dose levels right down to 1
gram triggered infection.
Evidence That Transmissible Mink Encephalopathy Results from Feeding
Infected Cattle
Over the next 8-10 weeks, approximately 40% of all the adult mink on the
farm died from TME.
snip...
The rancher was a ''dead stock'' feeder using mostly (>95%) downer or
dead dairy cattle...
Saturday, December 05, 2015
*** CWD Prions Remain Infectious after Passage Through the Digestive System
of Coyotes (Canis latrans) ***
Terry S. Singeltary Sr.
*** See attached file(s) No documents available. Attachments View All (1)
Guidance for Industry Ensuring Safety of Animal Feed Maintained and Fed On-Farm
Terry Singeltary Comment View Attachment:
Monday, November 16, 2015
*** Docket No. APHIS-2007-0127 Scrapie in Sheep and Goats Terry Singeltary
Sr. Submission ***
Saturday, December 12, 2015
*** NOTICE: Environmental Impact Statement on Large Livestock Carcasses TSE
Prion REPORT December 14, 2015 ***
Saturday, December 12, 2015
CHRONIC WASTING DISEASE CWD TSE PRION REPORT DECEMBER 14, 2015
Tuesday, January 26, 2016
USDA National Program 103 ANIMAL HEALTH TSE PRION ACCOMPLISHMENT REPORT
2011-2015 March 2015
Wednesday, January 20, 2016
Exportation of Live Animals, Hatching Eggs, and Animal Germplasm From the
United States [Docket No. APHIS-2012-0049] RIN 0579-AE00 2016-00962
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF
TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
Title: Scrapie transmits to white-tailed deer by the oral route and has a
molecular profile similar to chronic wasting disease
Authors
item Greenlee, Justin item Moore, S - item Smith, Jodi - item Kunkle,
Robert item West Greenlee, M -
Submitted to: American College of Veterinary Pathologists Meeting
Publication Type: Abstract Only Publication Acceptance Date: August 12, 2015
Publication Date: N/A Technical Abstract: The purpose of this work was to
determine susceptibility of white-tailed deer (WTD) to the agent of sheep
scrapie and to compare the resultant PrPSc to that of the original inoculum and
chronic wasting disease (CWD). We inoculated WTD by a natural route of exposure
(concurrent oral and intranasal (IN); n=5) with a US scrapie isolate. All
scrapie-inoculated deer had evidence of PrPSc accumulation. PrPSc was detected
in lymphoid tissues at preclinical time points, and deer necropsied after 28
months post-inoculation had clinical signs, spongiform encephalopathy, and
widespread distribution of PrPSc in neural and lymphoid tissues. Western
blotting (WB) revealed PrPSc with 2 distinct molecular profiles. WB on cerebral
cortex had a profile similar to the original scrapie inoculum, whereas WB of
brainstem, cerebellum, or lymph nodes revealed PrPSc with a higher profile
resembling CWD. Homogenates with the 2 distinct profiles from WTD with clinical
scrapie were further passaged to mice expressing cervid prion protein and
intranasally to sheep and WTD. In cervidized mice, the two inocula have distinct
incubation times. Sheep inoculated intranasally with WTD derived scrapie
developed disease, but only after inoculation with the inoculum that had a
scrapie-like profile. The WTD study is ongoing, but deer in both inoculation
groups are positive for PrPSc by rectal mucosal biopsy. In summary, this work
demonstrates that WTD are susceptible to the agent of scrapie, two distinct
molecular profiles of PrPSc are present in the tissues of affected deer, and
inoculum of either profile readily passes to deer.
White-tailed Deer are Susceptible to Scrapie by Natural Route of Infection
Jodi D. Smith, Justin J. Greenlee, and Robert A. Kunkle; Virus and Prion
Research Unit, National Animal Disease Center, USDA-ARS
Interspecies transmission studies afford the opportunity to better
understand the potential host range and origins of prion diseases. Previous
experiments demonstrated that white-tailed deer are susceptible to sheep-derived
scrapie by intracranial inoculation. The purpose of this study was to determine
susceptibility of white-tailed deer to scrapie after a natural route of
exposure. Deer (n=5) were inoculated by concurrent oral (30 ml) and intranasal
(1 ml) instillation of a 10% (wt/vol) brain homogenate derived from a sheep
clinically affected with scrapie. Non-inoculated deer were maintained as
negative controls. All deer were observed daily for clinical signs. Deer were
euthanized and necropsied when neurologic disease was evident, and tissues were
examined for abnormal prion protein (PrPSc) by immunohistochemistry (IHC) and
western blot (WB). One animal was euthanized 15 months post-inoculation (MPI)
due to an injury. At that time, examination of obex and lymphoid tissues by IHC
was positive, but WB of obex and colliculus were negative. Remaining deer
developed clinical signs of wasting and mental depression and were necropsied
from 28 to 33 MPI. Tissues from these deer were positive for scrapie by IHC and
WB. Tissues with PrPSc immunoreactivity included brain, tonsil, retropharyngeal
and mesenteric lymph nodes, hemal node, Peyer’s patches, and spleen. This work
demonstrates for the first time that white-tailed deer are susceptible to sheep
scrapie by potential natural routes of inoculation. In-depth analysis of tissues
will be done to determine similarities between scrapie in deer after
intracranial and oral/intranasal inoculation and chronic wasting disease
resulting from similar routes of inoculation.
see full text ;
PO-039: A comparison of scrapie and chronic wasting disease in white-tailed
deer
Justin Greenlee, Jodi Smith, Eric Nicholson US Dept. Agriculture;
Agricultural Research Service, National Animal Disease Center; Ames, IA USA
White-tailed deer are susceptible to the agent of sheep scrapie by
intracerebral inoculation
snip...
It is unlikely that CWD will be eradicated from free-ranging cervids, and
the disease is likely to continue to spread geographically [10]. However, the
potential that white-tailed deer may be susceptible to sheep scrapie by a
natural route presents an additional confounding factor to halting the spread of
CWD. This leads to the additional speculations that
1) infected deer could serve as a reservoir to infect sheep with scrapie
offering challenges to scrapie eradication efforts and
2) CWD spread need not remain geographically confined to current endemic
areas, but could occur anywhere that sheep with scrapie and susceptible cervids
cohabitate.
This work demonstrates for the first time that white-tailed deer are
susceptible to sheep scrapie by intracerebral inoculation with a high attack
rate and that the disease that results has similarities to CWD. These
experiments will be repeated with a more natural route of inoculation to
determine the likelihood of the potential transmission of sheep scrapie to
white-tailed deer. If scrapie were to occur in white-tailed deer, results of
this study indicate that it would be detected as a TSE, but may be difficult to
differentiate from CWD without in-depth biochemical analysis.
2012
PO-039: A comparison of scrapie and chronic wasting disease in white-tailed
deer
Justin Greenlee, Jodi Smith, Eric Nicholson US Dept. Agriculture;
Agricultural Research Service, National Animal Disease Center; Ames, IA USA
snip...
The results of this study suggest that there are many similarities in the
manifestation of CWD and scrapie in WTD after IC inoculation including early and
widespread presence of PrPSc in lymphoid tissues, clinical signs of depression
and weight loss progressing to wasting, and an incubation time of 21-23 months.
Moreover, western blots (WB) done on brain material from the obex region have a
molecular profile similar to CWD and distinct from tissues of the cerebrum or
the scrapie inoculum. However, results of microscopic and IHC examination
indicate that there are differences between the lesions expected in CWD and
those that occur in deer with scrapie: amyloid plaques were not noted in any
sections of brain examined from these deer and the pattern of immunoreactivity
by IHC was diffuse rather than plaque-like.
*** After a natural route of exposure, 100% of WTD were susceptible to
scrapie.
Deer developed clinical signs of wasting and mental depression and were
necropsied from 28 to 33 months PI. Tissues from these deer were positive for
PrPSc by IHC and WB. Similar to IC inoculated deer, samples from these deer
exhibited two different molecular profiles: samples from obex resembled CWD
whereas those from cerebrum were similar to the original scrapie inoculum. On
further examination by WB using a panel of antibodies, the tissues from deer
with scrapie exhibit properties differing from tissues either from sheep with
scrapie or WTD with CWD. Samples from WTD with CWD or sheep with scrapie are
strongly immunoreactive when probed with mAb P4, however, samples from WTD with
scrapie are only weakly immunoreactive. In contrast, when probed with mAb’s 6H4
or SAF 84, samples from sheep with scrapie and WTD with CWD are weakly
immunoreactive and samples from WTD with scrapie are strongly positive. This
work demonstrates that WTD are highly susceptible to sheep scrapie, but on first
passage, scrapie in WTD is differentiable from CWD.
2011
*** After a natural route of exposure, 100% of white-tailed deer were
susceptible to scrapie.
White-tailed Deer are Susceptible to Scrapie by Natural Route of Infection
Jodi D. Smith, Justin J. Greenlee, and Robert A. Kunkle; Virus and Prion
Research Unit, National Animal Disease Center, USDA-ARS
Interspecies transmission studies afford the opportunity to better
understand the potential host range and origins of prion diseases. Previous
experiments demonstrated that white-tailed deer are susceptible to sheep-derived
scrapie by intracranial inoculation. The purpose of this study was to determine
susceptibility of white-tailed deer to scrapie after a natural route of
exposure. Deer (n=5) were inoculated by concurrent oral (30 ml) and intranasal
(1 ml) instillation of a 10% (wt/vol) brain homogenate derived from a sheep
clinically affected with scrapie. Non-inoculated deer were maintained as
negative controls. All deer were observed daily for clinical signs. Deer were
euthanized and necropsied when neurologic disease was evident, and tissues were
examined for abnormal prion protein (PrPSc) by immunohistochemistry (IHC) and
western blot (WB). One animal was euthanized 15 months post-inoculation (MPI)
due to an injury. At that time, examination of obex and lymphoid tissues by IHC
was positive, but WB of obex and colliculus were negative. Remaining deer
developed clinical signs of wasting and mental depression and were necropsied
from 28 to 33 MPI. Tissues from these deer were positive for scrapie by IHC and
WB. Tissues with PrPSc immunoreactivity included brain, tonsil, retropharyngeal
and mesenteric lymph nodes, hemal node, Peyer’s patches, and spleen. This work
demonstrates for the first time that white-tailed deer are susceptible to sheep
scrapie by potential natural routes of inoculation. In-depth analysis of tissues
will be done to determine similarities between scrapie in deer after
intracranial and oral/intranasal inoculation and chronic wasting disease
resulting from similar routes of inoculation.
see full text ;
Monday, November 3, 2014
Persistence of ovine scrapie infectivity in a farm environment following
cleaning and decontamination
PPo3-22:
Detection of Environmentally Associated PrPSc on a Farm with Endemic
Scrapie
Ben C. Maddison,1 Claire A. Baker,1 Helen C. Rees,1 Linda A. Terry,2 Leigh
Thorne,2 Susan J. Belworthy2 and Kevin C. Gough3 1ADAS-UK LTD; Department of
Biology; University of Leicester; Leicester, UK; 2Veterinary Laboratories
Agency; Surry, KT UK; 3Department of Veterinary Medicine and Science; University
of Nottingham; Sutton Bonington, Loughborough UK
Key words: scrapie, evironmental persistence, sPMCA
Ovine scrapie shows considerable horizontal transmission, yet the routes of
transmission and specifically the role of fomites in transmission remain poorly
defined. Here we present biochemical data demonstrating that on a
scrapie-affected sheep farm, scrapie prion contamination is widespread. It was
anticipated at the outset that if prions contaminate the environment that they
would be there at extremely low levels, as such the most sensitive method
available for the detection of PrPSc, serial Protein Misfolding Cyclic
Amplification (sPMCA), was used in this study. We investigated the distribution
of environmental scrapie prions by applying ovine sPMCA to samples taken from a
range of surfaces that were accessible to animals and could be collected by use
of a wetted foam swab. Prion was amplified by sPMCA from a number of these
environmental swab samples including those taken from metal, plastic and wooden
surfaces, both in the indoor and outdoor environment. At the time of sampling
there had been no sheep contact with these areas for at least 20 days prior to
sampling indicating that prions persist for at least this duration in the
environment. These data implicate inanimate objects as environmental reservoirs
of prion infectivity which are likely to contribute to disease transmission.
Friday, February 05, 2016
*** Report of the Committee on Wildlife Diseases FY2015 CWD TSE PRION
Detections in Farmed Cervids and Wild ***
Friday, February 05, 2016
TEXAS NEW CHRONIC WASTING DISEASE CWD CASE DISCOVERD AT CAPTIVE DEER
RELEASE SITE
”The occurrence of CWD must be viewed against the contest of the locations
in which it occurred. It was an incidental and unwelcome complication of the
respective wildlife research programmes. Despite it’s subsequent recognition as
a new disease of cervids, therefore justifying direct investigation, no specific
research funding was forthcoming. The USDA veiwed it as a wildlife problem and
consequently not their province!” page 26.
*** PRION 2015 CONFERENCE FT. COLLINS CWD TSE PRION RISK FACTORS TO HUMANS
***
*** LATE-BREAKING ABSTRACTS PRION 2015 CONFERENCE ***
O18
Zoonotic Potential of CWD Prions
Liuting Qing1, Ignazio Cali1,2, Jue Yuan1, Shenghai Huang3, Diane Kofskey1,
Pierluigi Gambetti1, Wenquan Zou1, Qingzhong Kong1 1Case Western Reserve
University, Cleveland, Ohio, USA, 2Second University of Naples, Naples, Italy,
3Encore Health Resources, Houston, Texas, USA
*** These results indicate that the CWD prion has the potential to infect
human CNS and peripheral lymphoid tissues and that there might be asymptomatic
human carriers of CWD infection.
==================
***These results indicate that the CWD prion has the potential to infect
human CNS and peripheral lymphoid tissues and that there might be asymptomatic
human carriers of CWD infection.***
==================
P.105: RT-QuIC models trans-species prion transmission
Kristen Davenport, Davin Henderson, Candace Mathiason, and Edward Hoover
Prion Research Center; Colorado State University; Fort Collins, CO USA
Conversely, FSE maintained sufficient BSE characteristics to more
efficiently convert bovine rPrP than feline rPrP. Additionally, human rPrP was
competent for conversion by CWD and fCWD.
***This insinuates that, at the level of protein:protein interactions, the
barrier preventing transmission of CWD to humans is less robust than previously
estimated.
================
***This insinuates that, at the level of protein:protein interactions, the
barrier preventing transmission of CWD to humans is less robust than previously
estimated.***
================
*** PRICE OF CWD TSE PRION POKER GOES UP 2014 ***
Transmissible Spongiform Encephalopathy TSE PRION update January 2, 2014
*** chronic wasting disease, there was no absolute barrier to conversion of
the human prion protein.
*** Furthermore, the form of human PrPres produced in this in vitro assay
when seeded with CWD, resembles that found in the most common human prion
disease, namely sCJD of the MM1 subtype.
*** These results would seem to suggest that CWD does indeed have zoonotic
potential, at least as judged by the compatibility of CWD prions and their human
PrPC target. Furthermore, extrapolation from this simple in vitro assay suggests
that if zoonotic CWD occurred, it would most likely effect those of the PRNP
codon 129-MM genotype and that the PrPres type would be similar to that found in
the most common subtype of sCJD (MM1).***
*** The potential impact of prion diseases on human health was greatly
magnified by the recognition that interspecies transfer of BSE to humans by beef
ingestion resulted in vCJD. While changes in animal feed constituents and
slaughter practices appear to have curtailed vCJD, there is concern that CWD of
free-ranging deer and elk in the U.S. might also cross the species barrier.
Thus, consuming venison could be a source of human prion disease. Whether BSE
and CWD represent interspecies scrapie transfer or are newly arisen prion
diseases is unknown. Therefore, the possibility of transmission of prion disease
through other food animals cannot be ruled out. There is evidence that vCJD can
be transmitted through blood transfusion. There is likely a pool of unknown size
of asymptomatic individuals infected with vCJD, and there may be asymptomatic
individuals infected with the CWD equivalent. These circumstances represent a
potential threat to blood, blood products, and plasma supplies.
now, let’s see what the authors said about this casual link, personal
communications years ago. see where it is stated NO STRONG evidence. so, does
this mean there IS casual evidence ???? “Our conclusion stating that we found no
strong evidence of CWD transmission to humans”
From: TSS (216-119-163-189.ipset45.wt.net)
Subject: CWD aka MAD DEER/ELK TO HUMANS ???
Date: September 30, 2002 at 7:06 am PST
From: "Belay, Ermias"
To: Cc: "Race, Richard (NIH)" ; ; "Belay, Ermias"
Sent: Monday, September 30, 2002 9:22 AM
Subject: RE: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
Dear Sir/Madam,
In the Archives of Neurology you quoted (the abstract of which was attached
to your email), we did not say CWD in humans will present like variant CJD. That
assumption would be wrong. I encourage you to read the whole article and call me
if you have questions or need more clarification (phone: 404-639-3091). Also, we
do not claim that "no-one has ever been infected with prion disease from eating
venison." Our conclusion stating that we found no strong evidence of CWD
transmission to humans in the article you quoted or in any other forum is
limited to the patients we investigated.
Ermias Belay, M.D. Centers for Disease Control and Prevention
-----Original Message-----
From: Sent: Sunday, September 29, 2002 10:15 AM
To: rr26k@nih.gov; rrace@niaid.nih.gov; ebb8@CDC.GOV
Subject: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
Sunday, November 10, 2002 6:26 PM ......snip........end..............TSS
Thursday, April 03, 2008
A prion disease of cervids: Chronic wasting disease 2008 1: Vet Res. 2008
Apr 3;39(4):41 A prion disease of cervids: Chronic wasting disease Sigurdson CJ.
snip...
*** twenty-seven CJD patients who regularly consumed venison were reported
to the Surveillance Center***,
snip... full text ;
CJD is so rare in people under age 30, one case in a billion (leaving out
medical mishaps), that four cases under 30 is "very high," says Colorado
neurologist Bosque. "Then, if you add these other two from Wisconsin [cases in
the newspaper], six cases of CJD in people associated with venison is very, very
high." Only now, with Mary Riley, there are at least seven, and possibly eight,
with Steve, her dining companion. "It's not critical mass that matters,"
however, Belay says. "One case would do it for me." The chance that two people
who know each other would both contact CJD, like the two Wisconsin sportsmen, is
so unlikely, experts say, it would happen only once in 140 years.
Given the incubation period for TSEs in humans, it may require another
generation to write the final chapter on CWD in Wisconsin. "Does chronic wasting
disease pass into humans? We'll be able to answer that in 2022," says Race.
Meanwhile, the state has become part of an immense experiment.
I urge everyone to watch this video closely...terry
*** you can see video here and interview with Jeff's Mom, and scientist
telling you to test everything and potential risk factors for humans ***
Envt.07:
Pathological Prion Protein (PrPTSE) in Skeletal Muscles of Farmed and Free
Ranging White-Tailed Deer Infected with Chronic Wasting Disease
***The presence and seeding activity of PrPTSE in skeletal muscle from
CWD-infected cervids suggests prevention of such tissue in the human diet as a
precautionary measure for food safety, pending on further clarification of
whether CWD may be transmissible to humans.
Prions in Skeletal Muscles of Deer with Chronic Wasting Disease Rachel C.
Angers1,*, Shawn R. Browning1,*,†, Tanya S. Seward2, Christina J. Sigurdson4,‡,
Michael W. Miller5, Edward A. Hoover4, Glenn C. Telling1,2,3,§ snip...
Abstract The emergence of chronic wasting disease (CWD) in deer and elk in
an increasingly wide geographic area, as well as the interspecies transmission
of bovine spongiform encephalopathy to humans in the form of variant Creutzfeldt
Jakob disease, have raised concerns about the zoonotic potential of CWD. Because
meat consumption is the most likely means of exposure, it is important to
determine whether skeletal muscle of diseased cervids contains prion
infectivity. Here bioassays in transgenic mice expressing cervid prion protein
revealed the presence of infectious prions in skeletal muscles of CWD-infected
deer, demonstrating that humans consuming or handling meat from CWD-infected
deer are at risk to prion exposure.
***********CJD REPORT 1994 increased risk for consumption of veal and
venison and lamb***********
CREUTZFELDT JAKOB DISEASE SURVEILLANCE IN THE UNITED KINGDOM THIRD ANNUAL
REPORT AUGUST 1994
Consumption of venison and veal was much less widespread among both cases
and controls. For both of these meats there was evidence of a trend with
increasing frequency of consumption being associated with increasing risk of
CJD. (not nvCJD, but sporadic CJD...tss)
These associations were largely unchanged when attention was restricted to
pairs with data obtained from relatives. ...
Table 9 presents the results of an analysis of these data.
There is STRONG evidence of an association between ‘’regular’’ veal eating
and risk of CJD (p = .0.01).
Individuals reported to eat veal on average at least once a year appear to
be at 13 TIMES THE RISK of individuals who have never eaten veal.
There is, however, a very wide confidence interval around this estimate.
There is no strong evidence that eating veal less than once per year is
associated with increased risk of CJD (p = 0.51).
The association between venison eating and risk of CJD shows similar
pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK
OF CJD (p = 0.04).
There is some evidence that risk of CJD INCREASES WITH INCREASING FREQUENCY
OF LAMB EATING (p = 0.02).
The evidence for such an association between beef eating and CJD is weaker
(p = 0.14). When only controls for whom a relative was interviewed are included,
this evidence becomes a little STRONGER (p = 0.08).
snip...
It was found that when veal was included in the model with another
exposure, the association between veal and CJD remained statistically
significant (p = < 0.05 for all exposures), while the other exposures ceased
to be statistically significant (p = > 0.05).
snip...
In conclusion, an analysis of dietary histories revealed statistical
associations between various meats/animal products and INCREASED RISK OF CJD.
When some account was taken of possible confounding, the association between
VEAL EATING AND RISK OF CJD EMERGED AS THE STRONGEST OF THESE ASSOCIATIONS
STATISTICALLY. ...
snip...
In the study in the USA, a range of foodstuffs were associated with an
increased risk of CJD, including liver consumption which was associated with an
apparent SIX-FOLD INCREASE IN THE RISK OF CJD. By comparing the data from 3
studies in relation to this particular dietary factor, the risk of liver
consumption became non-significant with an odds ratio of 1.2 (PERSONAL
COMMUNICATION, PROFESSOR A. HOFMAN. ERASMUS UNIVERSITY, ROTTERDAM). (???...TSS)
snip...see full report ;
CJD9/10022
October 1994
Mr R.N. Elmhirst Chairman British Deer Farmers Association Holly Lodge
Spencers Lane BerksWell Coventry CV7 7BZ
Dear Mr Elmhirst,
CREUTZFELDT-JAKOB DISEASE (CJD) SURVEILLANCE UNIT REPORT
Thank you for your recent letter concerning the publication of the third
annual report from the CJD Surveillance Unit. I am sorry that you are
dissatisfied with the way in which this report was published.
The Surveillance Unit is a completely independant outside body and the
Department of Health is committed to publishing their reports as soon as they
become available. In the circumstances it is not the practice to circulate the
report for comment since the findings of the report would not be amended. In
future we can ensure that the British Deer Farmers Association receives a copy
of the report in advance of publication.
The Chief Medical Officer has undertaken to keep the public fully informed
of the results of any research in respect of CJD. This report was entirely the
work of the unit and was produced completely independantly of the the
Department.
The statistical results reqarding the consumption of venison was put into
perspective in the body of the report and was not mentioned at all in the press
release. Media attention regarding this report was low key but gave a realistic
presentation of the statistical findings of the Unit. This approach to
publication was successful in that consumption of venison was highlighted only
once by the media ie. in the News at one television proqramme.
I believe that a further statement about the report, or indeed statistical
links between CJD and consumption of venison, would increase, and quite possibly
give damaging credence, to the whole issue. From the low key media reports of
which I am aware it seems unlikely that venison consumption will suffer
adversely, if at all.
http://web.archive.org/web/20030511010117/http://www.bseinquiry.gov.uk/files/yb/1994/10/00003001.pdf
*** These results would seem to suggest that CWD does indeed have zoonotic
potential, at least as judged by the compatibility of CWD prions and their human
PrPC target. Furthermore, extrapolation from this simple in vitro assay suggests
that if zoonotic CWD occurred, it would most likely effect those of the PRNP
codon 129-MM genotype and that the PrPres type would be similar to that found in
the most common subtype of sCJD (MM1).***
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF
TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
Title: Transmission of scrapie prions to primate after an extended silent
incubation period
Authors
item Comoy, Emmanuel - item Mikol, Jacqueline - item Luccantoni-Freire,
Sophie - item Correia, Evelyne - item Lescoutra-Etchegaray, Nathalie - item
Durand, Valérie - item Dehen, Capucine - item Andreoletti, Olivier - item
Casalone, Cristina - item Richt, Juergen item Greenlee, Justin item Baron,
Thierry - item Benestad, Sylvie - item Hills, Bob - item Brown, Paul - item
Deslys, Jean-Philippe -
Submitted to: Scientific Reports Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 28, 2015 Publication Date: June 30, 2015
Citation: Comoy, E.E., Mikol, J., Luccantoni-Freire, S., Correia, E.,
Lescoutra-Etchegaray, N., Durand, V., Dehen, C., Andreoletti, O., Casalone, C.,
Richt, J.A., Greenlee, J.J., Baron, T., Benestad, S., Brown, P., Deslys, J.
2015. Transmission of scrapie prions to primate after an extended silent
incubation period. Scientific Reports. 5:11573.
Interpretive Summary: The transmissible spongiform encephalopathies (also
called prion diseases) are fatal neurodegenerative diseases that affect animals
and humans. The agent of prion diseases is a misfolded form of the prion protein
that is resistant to breakdown by the host cells. Since all mammals express
prion protein on the surface of various cells such as neurons, all mammals are,
in theory, capable of replicating prion diseases. One example of a prion
disease, bovine spongiform encephalopathy (BSE; also called mad cow disease),
has been shown to infect cattle, sheep, exotic undulates, cats, non-human
primates, and humans when the new host is exposed to feeds or foods contaminated
with the disease agent. The purpose of this study was to test whether non-human
primates (cynomologous macaque) are susceptible to the agent of sheep scrapie.
After an incubation period of approximately 10 years a macaque developed
progressive clinical signs suggestive of neurologic disease. Upon postmortem
examination and microscopic examination of tissues, there was a widespread
distribution of lesions consistent with a transmissible spongiform
encephalopathy. This information will have a scientific impact since it is the
first study that demonstrates the transmission of scrapie to a non-human primate
with a close genetic relationship to humans. This information is especially
useful to regulatory officials and those involved with risk assessment of the
potential transmission of animal prion diseases to humans. Technical Abstract:
Classical bovine spongiform encephalopathy (c-BSE) is an animal prion disease
that also causes variant Creutzfeldt-Jakob disease in humans. Over the past
decades, c-BSE's zoonotic potential has been the driving force in establishing
extensive protective measures for animal and human health.
*** In complement to the recent demonstration that humanized mice are
susceptible to scrapie, we report here the first observation of direct
transmission of a natural classical scrapie isolate to a macaque after a 10-year
incubation period. Neuropathologic examination revealed all of the features of a
prion disease: spongiform change, neuronal loss, and accumulation of PrPres
throughout the CNS.
*** This observation strengthens the questioning of the harmlessness of
scrapie to humans, at a time when protective measures for human and animal
health are being dismantled and reduced as c-BSE is considered controlled and
being eradicated.
*** Our results underscore the importance of precautionary and protective
measures and the necessity for long-term experimental transmission studies to
assess the zoonotic potential of other animal prion strains.
***This information will have a scientific impact since it is the first
study that demonstrates the transmission of scrapie to a non-human primate with
a close genetic relationship to humans. This information is especially useful to
regulatory officials and those involved with risk assessment of the potential
transmission of animal prion diseases to humans.
***This observation strengthens the questioning of the harmlessness of
scrapie to humans, at a time when protective measures for human and animal
health are being dismantled and reduced as c-BSE is considered controlled and
being eradicated. Our results underscore the importance of precautionary and
protective measures and the necessity for long-term experimental transmission
studies to assess the zoonotic potential of other animal prion strains.
O.05: Transmission of prions to primates after extended silent incubation
periods: Implications for BSE and scrapie risk assessment in human populations
Emmanuel Comoy, Jacqueline Mikol, Valerie Durand, Sophie Luccantoni,
Evelyne Correia, Nathalie Lescoutra, Capucine Dehen, and Jean-Philippe Deslys
Atomic Energy Commission; Fontenay-aux-Roses, France
Prion diseases (PD) are the unique neurodegenerative proteinopathies
reputed to be transmissible under field conditions since decades. The
transmission of Bovine Spongiform Encephalopathy (BSE) to humans evidenced that
an animal PD might be zoonotic under appropriate conditions. Contrarily, in the
absence of obvious (epidemiological or experimental) elements supporting a
transmission or genetic predispositions, PD, like the other proteinopathies, are
reputed to occur spontaneously (atpical animal prion strains, sporadic CJD
summing 80% of human prion cases). Non-human primate models provided the first
evidences supporting the transmissibiity of human prion strains and the zoonotic
potential of BSE. Among them, cynomolgus macaques brought major information for
BSE risk assessment for human health (Chen, 2014), according to their
phylogenetic proximity to humans and extended lifetime. We used this model to
assess the zoonotic potential of other animal PD from bovine, ovine and cervid
origins even after very long silent incubation periods.
*** We recently observed the direct transmission of a natural classical
scrapie isolate to macaque after a 10-year silent incubation period,
***with features similar to some reported for human cases of sporadic CJD,
albeit requiring fourfold long incubation than BSE. Scrapie, as recently evoked
in humanized mice (Cassard, 2014),
***is the third potentially zoonotic PD (with BSE and L-type BSE),
***thus questioning the origin of human sporadic cases. We will present an
updated panorama of our different transmission studies and discuss the
implications of such extended incubation periods on risk assessment of animal PD
for human health.
===============
***thus questioning the origin of human sporadic cases***
===============
***our findings suggest that possible transmission risk of H-type BSE to
sheep and human. Bioassay will be required to determine whether the PMCA
products are infectious to these animals.
==============
===============
PRION CONFERENCE 2014 HELD IN ITALY RECENTLY CWD BSE TSE UPDATE
> First transmission of CWD to transgenic mice over-expressing bovine
prion protein gene (TgSB3985)
PRION 2014 - PRIONS: EPIGENETICS and NEURODEGENERATIVE DISEASES – Shaping
up the future of prion research
Animal TSE Workshop 10.40 – 11.05 Talk Dr. L. Cervenakova First
transmission of CWD to transgenic mice over-expressing bovine prion protein gene
(TgSB3985)
Friday, August 14, 2015
Susceptibility of cattle to the agent of chronic wasting disease from elk
after intracranial inoculation
Wednesday, January 20, 2016
Exportation of Live Animals, Hatching Eggs, and Animal Germplasm From the
United States [Docket No. APHIS-2012-0049] RIN 0579-AE00 2016-00962
Thursday, January 14, 2016
*** EMERGING ANIMAL DISEASES Actions Needed to Better Position USDA to
Address Future Risks Report to the Chairman, Committee on Energy and Commerce,
House of Representatives December 2015 GAO-16-132
GAO
Friday, January 1, 2016
South Korea Lifts Ban on Beef, Veal Imports From Canada
US CONGRESS, another failed entity...tss
Tuesday, December 29, 2015
*** Congress repeals country-of-origin labeling rule for beef and pork
December 28, 2015 at 2:21am
*** Australian government assessing risk of importing beef from US, Japan
and the Netherlands
Thursday, December 24, 2015
Infectious disease spread is fueled by international trade
Thursday, December 17, 2015
Annual report of the Scientific Network on BSE-TSE 2015 EFSA-Q-2015-00738
10 December 2015
Sunday, October 18, 2015
World Organisation for Animal Health (OIE) and the Institut Pasteur
Cooperating on animal disease and zoonosis research
SSS SHOOT SHOVEL AND SHUT UP !
*** you can find some history of the BSE cases in Canada and Klein’s BSE
SSS policy comment here ;
Tuesday, August 12, 2014
MAD COW USDA TSE PRION COVER UP or JUST IGNORANCE, for the record AUGUST
2014
Saturday, December 12, 2015
*** BOVINE SPONGIFORM ENCEPHALOPATHY BSE TSE PRION REPORT DECEMBER 14, 2015
Thursday, October 22, 2015
*** Former Ag Secretary Ann Veneman talks women in agriculture and we talk
mad cow disease USDA and what really happened ***
*** Needless conflict ***
Nature 485, 279–280 (17 May 2012) doi:10.1038/485279b
Published online 16 May 2012
Terry S. Singeltary Sr. said:
I kindly wish to submit the following please ;
Comments on technical aspects of the risk assessment were then submitted to
FSIS.
Comments were received from Food and Water Watch, Food Animal Concerns
Trust (FACT), Farm Sanctuary, R-CALF USA, Linda A Detwiler, and Terry S.
Singeltary.
This document provides itemized replies to the public comments received on
the 2005 updated Harvard BSE risk assessment. Please bear the following points
in mind:
Owens, Julie
From: Terry S. Singeltary Sr. [flounder9@verizon.net]
Sent: Monday, July 24, 2006 1:09 PM
To: FSIS RegulationsComments
Subject: [Docket No. FSIS-2006-0011] FSIS Harvard Risk Assessment of Bovine
Spongiform Encephalopathy (BSE)
Page 1 of 98
FSIS, USDA, REPLY TO SINGELTARY
Singeltary to APHIS FDA USDA et al ;
I would kindly like to comment further on ;
Alzheimer-type brain pathology may be transmitted by grafts of dura mater
26/01/2016 By Karl Frontzek, et al.:
Original article | Published 26 January 2016,
doi:10.4414/smw.2016.14287
Cite this as: Swiss Med Wkly. 2016;146:w14287
Amyloid-β pathology and cerebral amyloid angiopathy are frequent in
iatrogenic Creutzfeldt-Jakob disease after dural grafting
MY comment as follows ;
Evidence for human transmission of amyloid-β pathology and cerebral amyloid
angiopathy
07 02:27 AM
Terry S. Singeltary Sr. said:
re-Evidence for human transmission of amyloid-β pathology and cerebral
amyloid angiopathy
2015-12-07 02:27 AM
Terry S. Singeltary Sr. said: re-Evidence for human transmission of
amyloid-? pathology and cerebral amyloid angiopathy Nature 525, 247?250 (10
September 2015) doi:10.1038/nature15369 Received 26 April 2015 Accepted 14
August 2015 Published online 09 September 2015 Updated online 11 September 2015
Erratum (October, 2015)
I would kindly like to comment on the Nature Paper, the Lancet reply, and
the newspaper articles.
First, I applaud Nature, the Scientist and Authors of the Nature paper, for
bringing this important finding to the attention of the public domain, and the
media for printing said findings.
Secondly, it seems once again, politics is getting in the way possibly of
more important Transmissible Spongiform Encephalopathy TSE Prion scientific
findings. findings that could have great implications for human health, and
great implications for the medical surgical arena. but apparently, the
government peer review process, of the peer review science, tries to intervene
again to water down said disturbing findings.
where have we all heard this before? it’s been well documented via the BSE
Inquiry. have they not learned a lesson from the last time?
we have seen this time and time again in England (and other Country’s) with
the BSE mad cow TSE Prion debacle.
That ‘anonymous' Lancet editorial was disgraceful. The editor, Dick Horton
is not a scientist.
The pituitary cadavers were very likely elderly and among them some were on
their way to CJD or Alzheimer's. Not a bit unusual. Then the recipients ? who
got pooled extracts injected from thousands of cadavers ? were 100% certain to
have been injected with both seeds. No surprise that they got both diseases
going after thirty year incubations.
That the UK has a "system in place to assist science journalists" to squash
embargoed science reports they find ? alarming? is pathetic.
Sounds like the journalists had it right in the first place: ‘Alzheimer,s
may be a transmissible infection? in The Independent to ? You can catch
Alzheimer’s? in The Daily Mirror or ? Alzheimer’s bombshell" in The Daily
Express
if not for the journalist, the layperson would not know about these
important findings.
where would we be today with sound science, from where we were 30 years
ago, if not for the cloak of secrecy and save the industry at all cost
mentality?
when you have a peer review system for science, from which a government
constantly circumvents, then you have a problem with science, and humans die.
to date, as far as documented body bag count, with all TSE prion named to
date, that count is still relatively low (one was too many in my case, Mom
hvCJD), however that changes drastically once the TSE Prion link is made with
Alzheimer?s, the price of poker goes up drastically.
so, who makes that final decision, and how many more decades do we have to
wait?
the iatrogenic mode of transmission of TSE prion, the many routes there
from, load factor, threshold from said load factor to sub-clinical disease, to
clinical disease, to death, much time is there to spread a TSE Prion to
anywhere, but whom, by whom, and when, do we make that final decision to do
something about it globally? how many documented body bags does it take? how
many more decades do we wait? how many names can we make up for one disease, TSE
prion?
Professor Collinge et al, and others, have had troubles in the past with
the Government meddling in scientific findings, that might in some way involve
industry, never mind human and or animal health.
FOR any government to continue to circumvent science for monetary gain,
fear factor, or any reason, shame, shame on you.
in my opinion, it?s one of the reasons we are at where we are at to date,
with regards to the TSE Prion disease science i.e. money, industry, politics,
then comes science, in that order.
greed, corporate, lobbyist there from, and government, must be removed from
the peer review process of sound science, it?s bad enough having them in the
pharmaceutical aspect of healthcare policy making, in my opinion.
my mother died from confirmed hvCJD, and her brother (my uncle) Alzheimer?s
of some type (no autopsy?). just made a promise, never forget, and never let
them forget, before I do.
I kindly wish to remind the public of the past, and a possible future we
all hopes never happens again. ...
[9. Whilst this matter is not at the moment directly concerned with the
iatrogenic CJD cases from hgH, there remains a possibility of litigation here,
and this presents an added complication. There are also results to be made
available shortly (1) concerning a farmer with CJD who had BSE animals, (2) on
the possible transmissibility of Alzheimer?s and (3) a CMO letter on prevention
of iatrogenic CJD transmission in neurosurgery, all of which will serve to
increase media interest.]
Terry S. Singeltary Sr. Bacliff, Texas USA 77518
snip...
***see Singeltary comment ;
Subject: 1992 IN CONFIDENCE TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO
PRIMATES POSSIBILITY ON A TRANSMISSIBLE PRION REMAINS OPEN
BSE101/1 0136
IN CONFIDENCE
CMO
From: . Dr J S Metiers DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
1. Thank you for showing me Diana Dunstan's letter. I am glad that MRC have
recognised the public sensitivity of these findings and intend to report them in
their proper context. 'This hopefully will avoid misunderstanding and possible
distortion by the media to portray the results as having more greater
significance than the findings so far justify.
2. Using a highly unusual route of transmission (intra-cerebral injection)
the researchers have demonstrated the transmission of a pathological process
from two cases one of severe Alzheimer's disease the other of
Gerstmann-Straussler disease to marmosets. However they have not demonstrated
the transmission of either clinical condition as the "animals were behaving
normally when killed". As the report emphasises the unanswered question is
whether the disease condition would have revealed itself if the marmosets had
lived longer. They are planning further research to see if the conditions, as
opposed to the partial pathological process, is transmissible.
what are the implications for public health?
3. The route 'of transmission is very specific and in the natural state of
things highly unusual. However it could be argued that the results reveal a
potential risk, in that brain tissue from these two patients has been shown to
transmit a pathological process. Should therefore brain tissue from such cases
be regarded as potentially infective? Pathologists, morticians, neuro surgeons
and those assisting at neuro surgical procedures and others coming into contact
with "raw" human brain tissue could in theory be at risk. However, on a priori
grounds given the highly specific route of transmission in these experiments
that risk must be negligible if the usual precautions for handling brain tissue
are observed.
1
92/11.4/1.1
BSE101/1 0137
4. The other dimension to consider is the public reaction. To some extent
the GSS case demonstrates little more than the transmission of BSE to a pig by
intra-cerebral injection. If other prion diseases can be transmitted in this way
it is little surprise that some pathological findings observed in GSS were also
transmissible to a marmoset. But the transmission of features of Alzheimer's
pathology is a different matter, given the much greater frequency of this
disease and raises the unanswered question whether some cases are the result of
a transmissible prion. The only tenable public line will be that "more research
is required’’ before that hypothesis could be evaluated. The possibility on a
transmissible prion remains open. In the meantime MRC needs carefully to
consider the range and sequence of studies needed to follow through from the
preliminary observations in these two cases. Not a particularly comfortable
message, but until we know more about the causation of Alzheimer's disease the
total reassurance is not practical.
J S METTERS Room 509 Richmond House Pager No: 081-884 3344 Callsign: DOH
832 llllYc!eS 2 92/11.4/1.2
>>> The only tenable public line will be that "more research is
required’’ <<<
>>> possibility on a transmissible prion remains
open<<<
O.K., so it’s about 23 years later, so somebody please tell me, when is
"more research is required’’ enough time for evaluation ?
Self-Propagative Replication of Ab Oligomers Suggests Potential
Transmissibility in Alzheimer Disease
*** Singeltary comment PLoS ***
Alzheimer’s disease and Transmissible Spongiform Encephalopathy prion
disease, Iatrogenic, what if ?
***see Singeltary Comment Posted by flounder on 05 Nov 2014 at 21:27
GMT
Sunday, November 22, 2015
*** Effect of heating on the stability of amyloid A (AA) fibrils and the
intra- and cross-species transmission of AA amyloidosis Abstract
Amyloid A (AA) amyloidosis is a protein misfolding disease characterized by
extracellular deposition of AA fibrils. AA fibrils are found in several tissues
from food animals with AA amyloidosis. For hygienic purposes, heating is widely
used to inactivate microbes in food, but it is uncertain whether heating is
sufficient to inactivate AA fibrils and prevent intra- or cross-species
transmission. We examined the effect of heating (at 60 °C or 100 °C) and
autoclaving (at 121 °C or 135 °C) on murine and bovine AA fibrils using Western
blot analysis, transmission electron microscopy (TEM), and mouse model
transmission experiments. TEM revealed that a mixture of AA fibrils and
amorphous aggregates appeared after heating at 100 °C, whereas autoclaving at
135 °C produced large amorphous aggregates. AA fibrils retained antigen
specificity in Western blot analysis when heated at 100 °C or autoclaved at 121
°C, but not when autoclaved at 135 °C. Transmissible pathogenicity of murine and
bovine AA fibrils subjected to heating (at 60 °C or 100 °C) was significantly
stimulated and resulted in amyloid deposition in mice. Autoclaving of murine AA
fibrils at 121 °C or 135 °C significantly decreased amyloid deposition.
Moreover, amyloid deposition in mice injected with murine AA fibrils was more
severe than that in mice injected with bovine AA fibrils. Bovine AA fibrils
autoclaved at 121 °C or 135 °C did not induce amyloid deposition in mice. These
results suggest that AA fibrils are relatively heat stable and that similar to
prions, autoclaving at 135 °C is required to destroy the pathogenicity of AA
fibrils. These findings may contribute to the prevention of AA fibril
transmission through food materials to different animals and especially to
humans.
Purchase options Price * Issue Purchase USD 511.00 Article Purchase USD
54.00
Transmission of Creutzfeldt-Jakob disease to a chimpanzee by electrodes
contaminated during neurosurgery.
Gibbs CJ Jr, Asher DM, Kobrine A, Amyx HL, Sulima MP, Gajdusek DC.
Laboratory of Central Nervous System Studies, National Institute of Neurological
Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892.
Stereotactic multicontact electrodes used to probe the cerebral cortex of a
middle aged woman with progressive dementia were previously implicated in the
accidental transmission of Creutzfeldt-Jakob disease (CJD) to two younger
patients. The diagnoses of CJD have been confirmed for all three cases. More
than two years after their last use in humans, after three cleanings and
repeated sterilisation in ethanol and formaldehyde vapour, the electrodes were
implanted in the cortex of a chimpanzee. Eighteen months later the animal became
ill with CJD. This finding serves to re-emphasise the potential danger posed by
reuse of instruments contaminated with the agents of spongiform
encephalopathies, even after scrupulous attempts to clean them.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8006664&dopt=Abstract
Thursday, January 14, 2016
Preventable Tragedies: Superbugs and How Ineffective Monitoring of Medical
Device Safety Fails Patients REPORT
how can it be, HOW CAN IT BE $$$ not a word about CJD GSS FFI VPSPR TSE
Prions that I saw...absolutely crazy, WE ARE MISSING THE BIGGER PICTURE!
how many victims that will never be reported ???
I told Olympus 15 years ago about these risk factors from endoscopy
equipment, disinfection, even spoke with the Doctor at Olympus, this was back in
1999. I tried to tell them that they were exposing patients to dangerous
pathogens such as the CJD TSE prion, because they could not properly clean them.
even presented my concern to a peer review journal GUT, that was going to
publish, but then it was pulled by Professor Michael Farthing et al... see ;
some old history on Endoscopy equipment and CJD TSE Prion concerns ;
1999
Subject: CJD * Olympus Endoscope
Date: Sun, 10 Oct 1999 16:41:49 –0500
From: "Terry S. Singeltary Sr."
To: GOLDSS@...
Dear Dr. Goldstine,
Hello Sir, I understand that Olympus has issued a letter to the medical
institutions and the CDC, about the dangers of _not_ being able to decontaminate
the instruments (endoscope's) via modern autoclaving techniques (boil 3 minutes
in 3% SDS or another ionic detergent and autoclave for 1 hour at 134 degrees C).
I understand that; "Olympus" has issued a warning, _not_ to attempt to
decontaminate the instrument, that they are instructed to destroy them.
...see;
Friday, January 10, 2014
vpspr, sgss, sffi, TSE, an iatrogenic by-product of gss, ffi, familial type
prion disease, what it ???
Greetings Friends, Neighbors, and Colleagues,
Sunday, January 17, 2016
*** Of Grave Concern Heidenhain Variant Creutzfeldt Jakob Disease
Diagnosis and Reporting of Creutzfeldt-Jakob Disease
Singeltary, Sr et al. JAMA.2001; 285: 733-734. Vol. 285 No. 6, February 14,
2001 JAMA
Diagnosis and Reporting of Creutzfeldt-Jakob Disease
To the Editor: In their Research Letter, Dr Gibbons and colleagues1
reported that the annual US death rate due to Creutzfeldt-Jakob disease (CJD)
has been stable since 1985. These estimates, however, are based only on reported
cases, and do not include misdiagnosed or preclinical cases. It seems to me that
misdiagnosis alone would drastically change these figures. An unknown number of
persons with a diagnosis of Alzheimer disease in fact may have CJD, although
only a small number of these patients receive the postmortem examination
necessary to make this diagnosis. Furthermore, only a few states have made CJD
reportable. Human and animal transmissible spongiform encephalopathies should be
reportable nationwide and internationally.
Terry S. Singeltary, Sr Bacliff, Tex
1. Gibbons RV, Holman RC, Belay ED, Schonberger LB. Creutzfeldt-Jakob
disease in the United States: 1979-1998. JAMA. 2000;284:2322-2323.
26 March 2003
Terry S. Singeltary, retired (medically) CJD WATCH
I lost my mother to hvCJD (Heidenhain Variant CJD). I would like to comment
on the CDC's attempts to monitor the occurrence of emerging forms of CJD.
Asante, Collinge et al [1] have reported that BSE transmission to the
129-methionine genotype can lead to an alternate phenotype that is
indistinguishable from type 2 PrPSc, the commonest sporadic CJD. However, CJD
and all human TSEs are not reportable nationally. CJD and all human TSEs must be
made reportable in every state and internationally. I hope that the CDC does not
continue to expect us to still believe that the 85%+ of all CJD cases which are
sporadic are all spontaneous, without route/source. We have many TSEs in the USA
in both animal and man. CWD in deer/elk is spreading rapidly and CWD does
transmit to mink, ferret, cattle, and squirrel monkey by intracerebral
inoculation. With the known incubation periods in other TSEs, oral transmission
studies of CWD may take much longer. Every victim/family of CJD/TSEs should be
asked about route and source of this agent. To prolong this will only spread the
agent and needlessly expose others. In light of the findings of Asante and
Collinge et al, there should be drastic measures to safeguard the medical and
surgical arena from sporadic CJDs and all human TSEs. I only ponder how many
sporadic CJDs in the USA are type 2 PrPSc?
2 January 2000
British Medical Journal
U.S. Scientist should be concerned with a CJD epidemic in the U.S., as well
15 November 1999
British Medical Journal
vCJD in the USA * BSE in U.S.
The Lancet Infectious Diseases, Volume 3, Issue 8, Page 463, August 2003
doi:10.1016/S1473-3099(03)00715-1Cite or Link Using DOI
Tracking spongiform encephalopathies in North America
Original
Xavier Bosch
“My name is Terry S Singeltary Sr, and I live in Bacliff, Texas. I lost my
mom to hvCJD (Heidenhain variant CJD) and have been searching for answers ever
since. What I have found is that we have not been told the truth. CWD in deer
and elk is a small portion of a much bigger problem.” 49-year—old Singeltary is
one of a number of people who have remained largely unsatisfied after being told
that a close relative died from a rapidly progressive dementia compatible with
spontaneous Creutzfeldt—Jakob ...
Suspect symptoms
What if you can catch old-fashioned CJD by eating meat from a sheep
infected with scrapie?
28 Mar 01
Most doctors believe that sCJD is caused by a prion protein deforming by
chance into a killer. But Singeltary thinks otherwise. He is one of a number of
campaigners who say that some sCJD, like the variant CJD related to BSE, is
caused by eating meat from infected animals. Their suspicions have focused on
sheep carrying scrapie, a BSE-like disease that is widespread in flocks across
Europe and North America. Now scientists in France have stumbled across new
evidence that adds weight to the campaigners' fears. To their complete surprise,
the researchers found that one strain of scrapie causes the same brain damage in
mice as sCJD.
"This means we cannot rule out that at least some sCJD may be caused by
some strains of scrapie," says team member Jean-Philippe Deslys of the French
Atomic Energy Commission's medical research laboratory in Fontenay-aux-Roses,
south-west of Paris. Hans Kretschmar of the University of Göttingen, who
coordinates CJD surveillance in Germany, is so concerned by the findings that he
now wants to trawl back through past sCJD cases to see if any might have been
caused by eating infected mutton or lamb...
Tuesday, December 16, 2014
Evidence for zoonotic potential of ovine scrapie prions
Hervé Cassard,1, n1 Juan-Maria Torres,2, n1 Caroline Lacroux,1, Jean-Yves
Douet,1, Sylvie L. Benestad,3, Frédéric Lantier,4, Séverine Lugan,1, Isabelle
Lantier,4, Pierrette Costes,1, Naima Aron,1, Fabienne Reine,5, Laetitia
Herzog,5, Juan-Carlos Espinosa,2, Vincent Beringue5, & Olivier
Andréoletti1, Affiliations Contributions Corresponding author Journal name:
Nature Communications Volume: 5, Article number: 5821 DOI:
doi:10.1038/ncomms6821 Received 07 August 2014 Accepted 10 November 2014
Published 16 December 2014 Article tools Citation Reprints Rights &
permissions Article metrics
Abstract
Although Bovine Spongiform Encephalopathy (BSE) is the cause of variant
Creutzfeldt Jakob disease (vCJD) in humans, the zoonotic potential of scrapie
prions remains unknown. Mice genetically engineered to overexpress the human
prion protein (tgHu) have emerged as highly relevant models for gauging the
capacity of prions to transmit to humans. These models can propagate human
prions without any apparent transmission barrier and have been used used to
confirm the zoonotic ability of BSE. Here we show that a panel of sheep scrapie
prions transmit to several tgHu mice models with an efficiency comparable to
that of cattle BSE. The serial transmission of different scrapie isolates in
these mice led to the propagation of prions that are phenotypically identical to
those causing sporadic CJD (sCJD) in humans. These results demonstrate that
scrapie prions have a zoonotic potential and raise new questions about the
possible link between animal and human prions.
Subject terms: Biological sciences• Medical research At a glance
why do we not want to do TSE transmission studies on chimpanzees $
5. A positive result from a chimpanzee challenged severly would likely
create alarm in some circles even if the result could not be interpreted for
man. I have a view that all these agents could be transmitted provided a large
enough dose by appropriate routes was given and the animals kept long enough.
Until the mechanisms of the species barrier are more clearly understood it might
be best to retain that hypothesis.
snip...
R. BRADLEY
Subject: TEXAS NEW CHRONIC WASTING DISEASE CWD CASE DISCOVERD AT CAPTIVE
DEER RELEASE SITE
Friday, February 05, 2016
TEXAS NEW CHRONIC WASTING DISEASE CWD CASE DISCOVERD AT CAPTIVE DEER
RELEASE SITE
Friday, February 05, 2016
*** Report of the Committee on Wildlife Diseases FY2015 CWD TSE PRION
Detections in Farmed Cervids and Wild ***
Wednesday, January 20, 2016
Exportation of Live Animals, Hatching Eggs, and Animal Germplasm From the
United States [Docket No. APHIS-2012-0049] RIN 0579-AE00 2016-00962
Transmissible Spongiform Encephalopthy TSE Prion Disease
*** Kuru Video
Kuru: The Science and The Sorcery
*** Scrapie Video
*** Human Mad Cow Video
*** USA sporadic CJD MAD COW DISEASE HAS HUGE PROBLEM Video
2014
***Moreover, L-BSE has been transmitted more easily to transgenic mice
overexpressing a human PrP [13,14] or to primates [15,16] than C-BSE.
***It has been suggested that some sporadic CJD subtypes in humans may
result from an exposure to the L-BSE agent.
*** Lending support to this hypothesis, pathological and biochemical
similarities have been observed between L-BSE and an sCJD subtype (MV genotype
at codon 129 of PRNP) [17], and between L-BSE infected non-human primate and
another sCJD subtype (MM genotype) [15].
snip...
Monday, October 10, 2011
EFSA Journal 2011 The European Response to BSE: A Success Story
snip...
EFSA and the European Centre for Disease Prevention and Control (ECDC)
recently delivered a scientific opinion on any possible epidemiological or
molecular association between TSEs in animals and humans (EFSA Panel on
Biological Hazards (BIOHAZ) and ECDC, 2011). This opinion confirmed Classical
BSE prions as the only TSE agents demonstrated to be zoonotic so far
*** but the possibility that a small proportion of human cases so far
classified as "sporadic" CJD are of zoonotic origin could not be excluded.
*** Moreover, transmission experiments to non-human primates suggest that
some TSE agents in addition to Classical BSE prions in cattle (namely L-type
Atypical BSE, Classical BSE in sheep, transmissible mink encephalopathy (TME)
and chronic wasting disease (CWD) agents) might have zoonotic potential.
snip...
Thursday, August 12, 2010
Seven main threats for the future linked to prions
First threat
The TSE road map defining the evolution of European policy for protection
against prion diseases is based on a certain numbers of hypotheses some of which
may turn out to be erroneous. In particular, a form of BSE (called atypical
Bovine Spongiform Encephalopathy), recently identified by systematic testing in
aged cattle without clinical signs, may be the origin of classical BSE and thus
potentially constitute a reservoir, which may be impossible to eradicate if a
sporadic origin is confirmed.
*** Also, a link is suspected between atypical BSE and some apparently
sporadic cases of Creutzfeldt-Jakob disease in humans.
*** These atypical BSE cases constitute an unforeseen first threat that
could sharply modify the European approach to prion diseases.
Second threat
snip...
Saturday, December 12, 2015
CREUTZFELDT JAKOB DISEASE CJD TSE PRION REPORT DECEMBER 14, 2015
Sunday, November 23, 2014
*** Confirmed Variant Creutzfeldt-Jakob Disease (variant CJD) Case in Texas
in June 2014 confirmed as USA case NOT European ***
Monday, November 3, 2014
USA CJD TSE PRION UNIT, TEXAS, SURVEILLANCE UPDATE NOVEMBER 2014
National Prion Disease Pathology Surveillance Center Cases Examined1
(October 7, 2014)
***6 Includes 11 cases in which the diagnosis is pending, and 19
inconclusive cases;
***7 Includes 12 (11 from 2014) cases with type determination pending in
which the diagnosis of vCJD has been excluded.
***The sporadic cases include 2660 cases of sporadic Creutzfeldt-Jakob
disease (sCJD),
***50 cases of Variably Protease-Sensitive Prionopathy (VPSPr)
***and 21 cases of sporadic Fatal Insomnia (sFI).
Thursday, January 15, 2015
41-year-old Navy Commander with sporadic Creutzfeldt–Jakob disease CJD TSE
Prion: Case Report
Subject: *** Becky Lockhart 46, Utah’s first female House speaker, dies
diagnosed with the extremely rare Creutzfeldt-Jakob disease aka mad cow type
disease
what is CJD ? just ask USDA inc., and the OIE, they are still feeding the
public and the media industry fed junk science that is 30 years old.
why doesn’t some of you try reading the facts, instead of rubber stamping
everything the USDA inc says.
sporadic CJD has now been linked to BSE aka mad cow disease, Scrapie, and
there is much concern now for CWD and risk factor for humans.
My sincere condolences to the family and friends of the House Speaker Becky
Lockhart. I am deeply saddened hear this.
with that said, with great respect, I must ask each and every one of you
Politicians that are so deeply saddened to hear of this needless death of the
Honorable House Speaker Becky Lockhart, really, cry me a friggen river. I am
seriously going to ask you all this...I have been diplomatic for about 17 years
and it has got no where. people are still dying. so, are you all stupid or
what??? how many more need to die ??? how much is global trade of beef and other
meat products that are not tested for the TSE prion disease, how much and how
many bodies is this market worth?
Saturday, January 17, 2015
*** Becky Lockhart 46, Utah’s first female House speaker, dies diagnosed
with the extremely rare Creutzfeldt-Jakob disease
*** ALERT new variant Creutzfeldt Jakob Disease nvCJD or vCJD, sporadic CJD
strains, TSE prion aka Mad Cow Disease United States of America Update December
14, 2014 Report ***
*** Creutzfeldt-Jakob Disease Public Health Crisis VIDEO
Saturday, December 13, 2014
Terry S. Singeltary Sr. Publications TSE prion disease
Diagnosis and Reporting of Creutzfeldt-Jakob Disease
Singeltary, Sr et al. JAMA.2001; 285: 733-734. Vol. 285 No. 6, February 14,
2001 JAMA
snip...
I asked someone recently, what sort of hunting legacy do you want to leave
your children, did you want to have where all you have are blind, slobbering,
drooling, stumbling, or maybe even healthy looking subclinical cwd infected
cervid, to go on and expose who knows what (cause cwd is spreading, it has
mutated, and nobody can stop it so far), but is this what we want to leave our
children? the only answer I ever seem to get from anyone in the industry, is
just let cwd take care of itself. well hell, how is that working for us so
far?
this cwd tse prion must be stopped. the vertical and lateral transmission
of this cwd tse prion agent amongst cervids, if cwd jumps species (if it has not
already), and transmits the same ways vertical and lateral in other species, and
the other species are as susceptible from so many different routes and sources,
simply put, we’re screwed. just saying. I am not trying to scare anyone, I am
simply presenting the facts, you must make your own decision or not. we have
ignored these tse prion disease way too long.
these blogs are for educational use. I do not advertise or make money from
them.
MOM DOD 12/14/97 confirmed hvCJD, just made a promise to mom, never forget,
and never let them forget...
Terry S. Singeltary Sr. Bacliff, Texas USA 77518 flounder9@verizon.net
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