Bluetongue virus serotype 1 in wild ruminants, France, 2008-10.

The persistence of Bluetongue virus serotype 1 (BTV-1) circulation was evaluated in red deer (Cervus elaphus), roe deer (Capreolus capreolus), mouflons (Ovis ammon), and Pyrenean chamois (Rupicapra pyrenaica pyrenaica) sampled during two hunting seasons between September 2008 and February 2010 in the East Pyrenean Mountains, France. The prevalence of BTV antibody in red deer was high and not significantly different between the two hunting seasons (50.9% and 49.