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The majority of West Nile virus (WNV) disease cases can be diagnosed by testing serum or cerebrospinal fluid for immunoglobulin (Ig) M antibodies. However, in certain people molecular testing is better. Learn the signs, symptoms, and how to diagnose West Nile virus disease in your patients.
West Nile virus is the leading cause of disease spread by mosquitoes in the contiguous U.S. Most infections are mild but can be severe for some patients.
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