West Nile Virus (cont.)
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Media file 1: The Culex mosquito, common to the Eastern United States, is the primary vector responsible for infecting humans with West Nile virus. Prevention of West Nile virus infection is primarily directed at reducing the mosquito population from May to October and by taking precautions to limit human exposure during these months of high mosquito activity. (Photo from the Centers for Disease Control and Prevention)
West Nile Virus and West Nile Encephalitis Pictures
Media type: Illustration
Media file 2: States reporting laboratory-positive West Nile virus infection in birds, mosquitoes, animals, or humans, 2012 (Centers for Disease Control and Prevention)
Media type: Image
Last Editorial Review: 7/6/2012
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West Nile encephalitis (WNE) is distinguished from other arthropod-borne causes of viral encephalitis (eg, western equine encephalitis, eastern equine encephalitis [EEE], Japanese encephalitis, Venezuelan encephalitis) based on its geographic distribution, clinical features, and laboratory findings.