Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2006 May 20;158(20):683-7.
doi: 10.1136/vr.158.20.683.

Estimates of the prevalence of transmissible spongiform encephalopathies in sheep and goats in France in 2002

E Morignat  1 , G Cazeau, A-G Biacabe, J-L Vinard, A Bencsik, J-Y Madec, C Ducrot, T Baron, D Calavas
Affiliations

Estimates of the prevalence of transmissible spongiform encephalopathies in sheep and goats in France in 2002

E Morignat et al. Vet Rec. .

Abstract

An active surveillance programme for transmissible spongiform encephalopathies (TSES) in sheep and goats was implemented in France in 2002 at abattoirs and rendering plants. The analysis of the results of this programme highlighted three biases: a potentially non-random sampling scheme in both rendering plants and abattoirs, a heterogeneous geographical sampling ratio, and the use of two diagnostic tests of unequal sensitivity. Simulations were run to estimate the prevalence of TSES by taking these biases into account. A comparison of the prevalence of TSES calculated from the raw data with the simulation results showed that the effects of non-random sampling were minor in comparison with the effects of the heterogeneous geographical sampling ratio and the use of two diagnostic tests.

PubMed Disclaimer

MeSH terms

LinkOut - more resources