West Nile virus outbreak in horses, southern France, 2000 : results of a serosurvey

Durand Benoit, Chevalier Véronique, Pouillot Régis, Labie Jacques, Marendat Ingrid, Murgue Bernadette, Zeller Hervé, Zientara Stéphan. 2002. West Nile virus outbreak in horses, southern France, 2000 : results of a serosurvey. Emerging Infectious Diseases, 8 (8) : 777-782.

Url - éditeur : http://www.cdc.gov/ncidod/EID/vol8no8/01-0486.htm

Résumé : 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.

Mots-clés Agrovoc : flavivirus, fièvre, cheval, surveillance épidémiologique, épidémiologie, immunologie

Mots-clés géographiques Agrovoc : France, Languedoc-Roussillon

Mots-clés complémentaires : Émergence, Fièvre du Nil occidental

Classification Agris : L73 - Maladies des animaux

Auteurs et affiliations

• Durand Benoit, AFSSA (FRA)
• Chevalier Véronique, CIRAD-EMVT-ECONAP (SEN)
• Pouillot Régis, AFSSA (FRA)
• Labie Jacques, AFSSA (FRA)
• Marendat Ingrid, Institut Pasteur (FRA)
• Murgue Bernadette, Institut Pasteur (FRA)
• Zeller Hervé, Institut Pasteur (FRA)
• Zientara Stéphan, AFSSA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/542048/)

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