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From: TSS ()
Subject: Scrapie find not a threat to local flocks ??? MORE BSe PR...UPDATE SCRAPIE USA
Date: March 2, 2005 at 9:00 am PST

-------- Original Message --------
Subject: Scrapie find not a threat to local flocks ??? MORE BSe PR...
Date: Mon, 28 Feb 2005 09:04:49 -0600
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy

##################### Bovine Spongiform Encephalopathy #####################

Scrapie find not a threat to local flocks

Tuesday, February 15, 2005 12:34 PM CST

RUPERT - Finding scrapie in a local sheep flock is not cause for alarm.

"The disease has never been linked to human disease. There is nothing to
fear," said Marie Bulgin, a professor at the University of Idaho's Caine
Veterinary Teaching Center in Caldwell.

The disease is related to bovine spongiform encephalopathy (BSE), also
known as mad cow disease, but the means of transmission is different.

The agent that causes scrapie is most concentrated in birthing fluids
and the placenta. A ewe's own lamb or other sheep contract the disease
by licking these substances, but passing through the birth canal does
not transmit scrapie from an infected ewe to her lamb, Bulgin said.

Idaho was the first state to require mandatory tracking of sheep to
address the spread of scrapie, said Rupert sheep grower Henry
Etcheverry, president of the Idaho Wool Growers Association.

"Idaho is at the forefront in the sheep industry," Etcheverry said.

After Idaho began tracking sheep in its effort to eradicate scrapie, the
federal government adopted a slaughter surveillance program. That
surveillance program identified Idaho's most recent case of scrapie last
December, and the infected sheep was traced back to a Rupert flock,
Bulgin said.

The flock was quarantined immediately and any sheep showing symptoms of
scrapie would have been euthanized. Blood tests run on the sheep that
did not show symptoms of the disease can identify those with a genotype
resistant to scrapie, and the owner can keep those, Bulgin said.

Sheep identified as susceptible to scrapie are slaughtered and further
tests are done. Although the government cannot force the owner to
slaughter sheep with a susceptible genotype, quarantine cannot be lifted
unless the sheep are eliminated from the flock, Bulgin said. The
slaughtered sheep do not go into the food chain.

Tracing all of the records for a flock that had an infected sheep is
very time-consuming because records have to be examined for the life
span of the sheep, which might be as much as eight years, Bulgin said.

The Rupert case is Idaho's most recent, but last spring the state had
another case of the disease that has been recognized for more than 200
years, Bulgin said.

Scrapie was first found in the United States in 1946. That sheep was
born in Great Britain and brought into the U.S. from Canada, Etcheverry

"So far in Idaho no large range flocks have tested positive (for
scrapie)," Bulgin said, adding the disease has not been found in western
white-faced sheep.

The disease is more frequently found in the black-faced breeds in
smaller flocks, Bulgin said.

Asked why sheep growers would choose to raise the black-faced breeds,
Bulgin said they are very fast growing and able to reproduce more
quickly because they reach sexual maturity early. They also excel in
passing on desirable traits.

> "The disease has never been linked to human disease. There is nothing
> to fear," said Marie Bulgin, a professor at the University of Idaho's
> Caine Veterinary Teaching Center in Caldwell.

famous last words ;

Office Note


A The Present Position with respect to Scrapie
A] The Problem

Scrapie is a natural disease of sheep and goats. It is a slow
and inexorably progressive degenerative disorder of the nervous system
and it ia fatal. It is enzootic in the United Kingdom but not in all

The field problem has been reviewed by a MAFF working group
(ARC 35/77). It is difficult to assess the incidence in Britain for
a variety of reasons but the disease causes serious financial loss;
it is estimated that it cost Swaledale breeders alone $l.7 M during
the five years 1971-1975. A further inestimable loss arises from the
closure of certain export markets, in particular those of the United
States, to British sheep.

It is clear that scrapie in sheep is important commercially and
for that reason alone effective measures to control it should be
devised as quickly as possible.

Recently the question has again been brought up as to whether
scrapie is transmissible to man. This has followed reports that the
disease has been transmitted to primates. One particularly lurid
speculation (Gajdusek 1977) conjectures that the agents of scrapie,
kuru, Creutzfeldt-Jakob disease and transmissible encephalopathy of
mink are varieties of a single "virus". The U.S. Department of
Agriculture concluded that it could "no longer justify or permit
scrapie-blood line and scrapie-exposed sheep and goats to be processed
for human or animal food at slaughter or rendering plants" (ARC 84/77)"
The problem is emphasised by the finding that some strains of scrapie
produce lesions identical to the once which characterise the human

Whether true or not. the hypothesis that these agents might be
transmissible to man raises two considerations. First, the safety
of laboratory personnel requires prompt attention. Second, action
such as the "scorched meat" policy of USDA makes the solution of the
acrapie problem urgent if the sheep industry is not to suffer



1: J Infect Dis 1980 Aug;142(2):205-8

Oral transmission of kuru, Creutzfeldt-Jakob disease, and scrapie to
nonhuman primates.

Gibbs CJ Jr, Amyx HL, Bacote A, Masters CL, Gajdusek DC.

Kuru and Creutzfeldt-Jakob disease of humans and scrapie disease of
sheep and goats were transmitted to squirrel monkeys (Saimiri
sciureus) that were exposed to the infectious agents only by their
nonforced consumption of known infectious tissues. The asymptomatic
incubation period in the one monkey exposed to the virus of kuru was
36 months; that in the two monkeys exposed to the virus of
Creutzfeldt-Jakob disease was 23 and 27 months, respectively; and
that in the two monkeys exposed to the virus of scrapie was 25 and
32 months, respectively. Careful physical examination of the buccal
cavities of all of the monkeys failed to reveal signs or oral
lesions. One additional monkey similarly exposed to kuru has
remained asymptomatic during the 39 months that it has been under

PMID: 6997404


Infected and Source Flocks

As of September 30, 2004, there were 67 scrapie infected and source
flocks (figure 3
There were a total of 100** new infected and source flocks reported for
FY 2004 (figure 4
The total infected and source flocks that have been released in FY 2004
are 77 (figure 5
The percent of new infected and source flocks cleaned up or on clean up
plans was 96%. In addition, as of September 30, 2004, 368 scrapie cases
have been confirmed and reported by the National Veterinary Services
Laboratories (NVSL) in FY 2004, of which 54 were RSSS cases (figure 6
and figure 7
Thirteen cases of scrapie in goats have been reported since 1990 (figure
One new goat case was reported in FY 2004. New infected flocks, source
flocks, and flocks released for FY 2004 are depicted in chart 4
One new goat case was reported in FY 2004. Approximately 3,058 animals
were indemnified comprised of 47% non-registered sheep, 44% registered
sheep, 6% non-registered goats and 1% registered goats.

Greetings list members,

I would sure like to see these human transmission studies that rule out
transmission of scrapie to humans. I have been waiting to see them for
years. I do not think they exist. ODD, how scrapie transmits to primates
by their nonforced consumption of known infectious tissues.
never say never with human animal TSEs. NOW, we have this BSE
in Goats, we have the Atypical TSE in the Vermont Sheep everyone
was so worried about 2+ years ago, but today, they are not worried,
or at least it would seem that way since we were told mouse bio assays
were to have stated immediately. i just wonder how many goats and or
sheep in the USA have BSE or another atyical strain of TSE? i wonder
if scrapie testing would pick up atypical TSE? we hell, i answered my own
question above. MAKES no difference if they find atyipcal TSE, they
do not confirm it once they do i.e. Vermont sheep. ...

I KNOW there may be a few suspect imports of goat and sheep
from UK here ;


Like lambs to the slaughter;f=12;t=000392


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