SCRAPIE USA UPDATE JUNE 2008 NOR-98 REPORTED PA

INFECTED AND SOURCE FLOCKS

There were 20 scrapie infected and source flocks with open statuses (Figure 3) as of April, 30, 2008. Twenty eight new infected and source flocks have been designated in FY 2008 (Figure 4); three source flocks were reported in April. ...snip

POSITIVE SCRAPIE CASES

As of April 30, 2008, 122 new scrapie cases have been confirmed and reported by the National Veterinary Services Laboratories (NVSL) in FY 2008 (Figure 6). Of these, 103 were field cases and 19* were Regulatory Scrapie Slaughter Surveillance (RSSS) cases (collected in FY 2008 and reported by May 20, 2008). Positive cases reported for April 2008 are depicted in Figure 7. Eighteen cases of scrapie in goats have been confirmed by NVSL since implementation of the regulatory changes in FY 2002 (Figure 8). The most recent positive goat case was confirmed in February 2008 and originated from the same herd in Michigan as the other FY 2008 goat cases. ...snip

CAPRINE SCRAPIE PREVALENCE STUDY (CSPS)

snip...

However, four positive goats have been identified this fiscal year through field investigations. One was a clinical suspect submitted for testing and the other three originated from the birth herd of the clinical case.

ANIMALS SAMPLED FOR SCRAPIE TESTING

As of April 30, 2008, 26,703 animals have been sampled for scrapie testing: 23,378 RSSS, 1,517 goats for the CSPS study, 1,466 regulatory field cases, 270 regulatory third eyelid biopsies, and 72 regulatory rectal biopsies (chart 8).

TESTING OF LYMPHOID TISSUE OBTAINED BY RECTAL BIOPSY WAS APPROVED BY USDA AS AN OFFICIAL LIVE-ANIMAL TEST ON JANUARY 11, 2008. ...

PLEASE NOTE, (FIGURE 6), Scrapie Confirmed Cases in FY 2008 MAP, PA 3, 1**, Two cases-state of ID UNKNOWN, 1 case Nor98-like**

http://www.aphis.usda.gov/animal_health/animal_diseases/scrapie/downloads/monthly_scrapie_rpt.pps

Greetings,

Apparently, there is a new strain of the Nor-98 atypical Scrapie here in the USA i.e. new strain called ''Nor98-like'' ;-)

I would like to thank Dr. Sutton et al for adding location of the 'Nor-98like' to map!

----- Original Message -----

From: Diane.L.Sutton
To: Terry S. Singeltary Sr.
Sent: Tuesday, August 21, 2007 7:42 AM
Subject: Re: SCRAPIE MONTHLY REPORT AS OF JUNE 30, 2007

Hi Terry - please see responses below.

snip...

> AND, if these are new cases, and i understand this correctly, how do we know what state they were reported in ?

you can't from the report. The flocks of origin were in WY, CO and CA

> maybe you might can add these atypical cases to the pps presentation on the monthly chart some how,.... just a suggestion ?

We are considering it.

Diane L. Sutton
National Scrapie Program Coordinator
National Center for Animal Health Programs USDA,
APHIS, VS 4700 River Rd.,
Unit 43 Riverdale, MD 20737 301-734-6954

============================

NOT to forget the 5 cases of the NOR-98 atypical scrapie documented in the USA in 2007, in five different states. WHICH pathologically looks like some sub-types of sporadic CJD, of which Stanely Prusiner warns of a public health risk ;

***The pathology features of Nor98 in the cerebellum of the affected sheep showed similarities with those of sporadic Creutzfeldt-Jakob disease in humans.

http://www.prion2007.com/pdf/Prion%20Book%20of%20Abstracts.pdf

Here we report that both Nor98 and discordant cases, including three sheep homozygous for the resistant PrPARR allele (A136R154R171), efficiently transmitted the disease to transgenic mice expressing ovine PrP, and that they shared unique biological and biochemical features upon propagation in mice. These observations support the view that a truly infectious TSE agent, unrecognized until recently, infects sheep and goat flocks and may have important implications in terms of scrapie control and public health.

Edited by Stanley B. Prusiner, University of California, San Francisco, CA, and approved September 12, 2005 (received for review March 21, 2005)

http://www.pnas.org/cgi/content/abstract/0502296102v1

http://nor-98.blogspot.com/

In FY 2007, 331 scrapie cases have been confirmed and reported by the National Veterinary Services Laboratories (NVSL), including 59* Regulatory Scrapie Slaughter Surveillance (RSSS) cases (Figure 5 and Slide 16). In FY 2007, two field cases, one validation case, and two RSSS cases were consistent with Nor-98 scrapie. The Nor98-like cases originated from flocks in California, Minnesota, Colorado, Wyoming and Indiana respectively. Nineteen cases of scrapie in goats have been reported since 1990 (Figure 6). The last goat case was reported in September 2007.

snip...

see full report here ;

http://www.aphis.usda.gov/animal_health/animal_diseases/scrapie/downloads/yearly_report.pps

Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518