RESUMEN
The Camargue area of southern France experienced the re-emergence of West Nile Virus (WNV) in the late summer of 2000 and 2004. Immediately preceding the 2004 outbreak, samples were collected from 432 birds of 32 different species captured in mist nets and from 201 Cattle Egret (Bubulcus ibis) nestlings sampled in their nests between 1 April and 12 June 2004. West Nile virus neutralizing titers of >/=40 were detected in 4.8% (95% confidence limit, 2.9-7.5%) of the adult birds and in 1.6% (0.3-4.6%) of the egret nestlings. Migratory passerines had a higher prevalence of WNV neutralizing antibodies (7.0%) than did resident and short-distance migratory passerines (0.8%), suggesting exposure to WNV or a related flavivirus during overwintering in Africa.
Asunto(s)
Anticuerpos Antivirales/sangre , Enfermedades de las Aves/epidemiología , Fiebre del Nilo Occidental/veterinaria , Virus del Nilo Occidental/inmunología , Animales , Animales Salvajes/virología , Aves , Femenino , Francia/epidemiología , Masculino , Pruebas de Neutralización/veterinaria , Estudios Seroepidemiológicos , Fiebre del Nilo Occidental/epidemiologíaRESUMEN
European magpies (Pica pica) from southern France were tested for antibodies to West Nile virus (WNV) and viral shedding in feces during spring-autumn 2005. Results suggest that this peridomestic species may be a suitable sentinel species and a relevant target for additional investigations on WNV ecology in Europe.
Asunto(s)
Reservorios de Enfermedades , Passeriformes/virología , Fiebre del Nilo Occidental/epidemiología , Virus del Nilo Occidental , Animales , Reservorios de Enfermedades/veterinaria , Reservorios de Enfermedades/virología , Heces/virología , Francia/epidemiología , Enfermedades de los Caballos/virología , Caballos/virología , Vigilancia de Guardia/veterinaria , Estudios Seroepidemiológicos , Topografía MédicaRESUMEN
West Nile virus (WNV) reemerged in Morocco in September 2003, causing an equine outbreak. A WNV strain isolated from a brain biopsy was completely sequenced. On the basis of phylogenetic analyses, Moroccan WNV strains isolated during the 1996 and 2003 outbreaks were closely related to other strains responsible for equine outbreaks in the western Mediterranean basin.
