West Nile fever cases by affected areas in Europe and the Mediterranean, 2011 transmission season
Map
West Nile fever transmission season 2011 - Distribution of West File fever cases by affected areas European region and Mediterranean basin
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West Nile virus (WNV) infection is a mosquito-borne zoonosis. The virus is transmitted among birds via the bite of infected mosquitoes and incidentally humans and other mammals may become infected.