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From: TSS (216-119-132-51.ipset12.wt.net)
Subject: Prevalence of BSE in cattle found dead, euthanased or emergency slaughtered on farms in western France in 2000, 2001 and 2002
Date: October 25, 2004 at 2:33 pm PST

-------- Original Message --------
Subject: Prevalence of BSE in cattle found dead, euthanased or emergency slaughtered on farms in western France in 2000, 2001 and 2002
Date: Mon, 25 Oct 2004 16:40:47 -0500
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
To: BSE-L@UNI-KARLSRUHE.DE


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

Prevalence of BSE in cattle found dead, euthanased or emergency
slaughtered on farms in western France in 2000, 2001 and 2002

The overall trend and the trend within birth cohorts of the prevalence
of bovine spongiform encephalopathy (BSE) in cattle found dead,
euthanased or emergency slaughtered on farms in the Bretagne, Basse
Normandie and Pays de la Loire regions of France, during the periods
from August 7 to December 22 in 2000, 2001 and 2002, were analysed by
non-conditional logistic regression, adjusted for the region and for the
type of animals. The overall prevalence of BSE during these three
periods decreased from 2∑71 per 1000 in 2000 to 1∑41 per 1000 in 2001
and 0∑42 per 1000 in 2002. The prevalence within birth cohorts started
to decrease for the cohort born between July 1, 1995 and June 30, 1996
(cohort 95/96) and the trend was reinforced for cohort 96/97, suggesting
that the exposure of animals to the BSE agent had started to decrease
for animals born after July 1995, that is, one year before the ban on
specified risk materials in meat and bone meal was implemented in
France. However, considering that most of the animals would have been
infected at between six and 18 months of age, the decrease may have been
due, at least partly, to this control measure.

http://www.vetrecord.co.uk/abs984.htm

TSS

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