Emerging Infectious Disease ISSN: 1080-6059

A Case–Control Study on the Origin of Atypical Scrapie in Sheep, France

Alexandre Fediaevsky

, Eric Morignat, Christian Ducrot, and Didier Calavas

Author affiliations: Agence Française de Sécurité Sanitaire des Aliments, Lyon, France (A. Fediaevsky, E. Morignat, D. Calavas); Institut National de la Recherche Agronomique, Clermont-Theix, France (A. Fediaevsky, C, Ducrot)

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Figure 2

Distribution of C0 for cases of atypical scrapie and controls in sheep, France, 1994–2005. C0, birth cohort assuming that in each flock all animals born during the same birth campaign (defined from July 1 of year n – 1 to June 30 of year n) shared the same exposure.

Figure 2. Distribution of C₀ for cases of atypical scrapie and controls in sheep, France, 1994–2005. C₀, birth cohort assuming that in each flock all animals born during the same birth campaign (defined from July 1 of year n – 1 to June 30 of year n) shared the same exposure.

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