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Serological Survey of West Nile Virus in Domestic Animals from Northwest Senegal

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Davoust, Bernard | Maquart, Marianne | Roqueplo, Cédric | Gravier, Patrick | Sambou, Masse | Mediannikov, Oleg | Leparc-Goffart, Isabelle

Edité par CCSD ; Mary Ann Liebert -

International audience. In Africa, infection with West Nile virus (WNV) is frequent but almost always asymptomatic in humans and equids. The aim of this study was to identify whether any other domestic animal living in the same enzootic locality may be the sentinel of WNV circulation. In northwest Senegal, blood samples were collected from 283 adult domestic animals (136 sheep, 64 horses, 29 donkeys, 29 goats, 14 cattle, and 11 dogs), in three localities near Keur Momar Sarr. Each serum was tested for WNV immunoglobulin G using enzyme-linked immunosorbent assay. The prevalence among donkeys, horses, dogs, goats, cattle, and sheep was 86.2%, 68.7%, 27.3%, 6.9%, 0%, and 0%, respectively. This survey confirms that equids and dogs could be the best sentinel animals for surveillance of WNV. The ruminants do not play a role in WNV epidemiology.

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