TY - JOUR AU - Durand, Benoit AU - Chevalier, Véronique AU - Pouillot, Régis AU - Labie, Jacques AU - Marendat, Ingrid AU - Murgue, Bernadette AU - Zeller, Hervé AU - Zientara, Stéphan T1 - West Nile Virus Outbreak in Horses, Southern France, 2000: Results of a Serosurvey T2 - Emerging Infectious Disease journal PY - 2002 VL - 8 IS - 8 SP - 777 SN - 1080-6059 AB - During late summer and autumn 2000, a West Nile fever outbreak in southern France resulted in 76 equine clinical cases; 21 horses died. We report the results of a large serosurvey of all equines within a 10-km radius of laboratory-confirmed cases. Blood samples were obtained from 5,107 equines, distributed in groups of 1 to 91 animals. West Nile virus immunoglobulin (Ig) G antibodies were found in 8.5% of animals (n=432). Forty-two percent of the IgG-positive animals were also IgM positive. Horses living in small groups were more affected than those in large groups. The results suggest that West Nile virus is not endemic in the affected area, the Camargue; rather, sporadic outbreaks are separated by long silent periods. KW - West Nile Virus KW - equidae KW - France KW - seroepidemiologic studies KW - age factors KW - logistic regression DO - 10.3201/eid0808.010486 UR - https://wwwnc.cdc.gov/eid/article/8/8/01-0486_article ER - End of Reference