A mosquito-borne viral illness caused by the WEST NILE VIRUS, a FLAVIVIRUS and endemic to regions of Africa, Asia, and Europe. Common clinical features include HEADACHE; FEVER; maculopapular rash; gastrointestinal symptoms; and lymphadenopathy. MENINGITIS; ENCEPHALITIS; and MYELITIS may also occur. The disease may occasionally be fatal or leave survivors with residual neurologic deficits. (From Joynt, Clinical Neurology, 1996, Ch26, p13; Lancet 1998 Sep 5;352(9130):767-71)

Synonyms: Infections, WNV, West Nile Fever Encephalitis, Encephalitis, West Nile Fever, West Nile Fever Meningoencephalitis, West Nile Fever Meningitis, West Nile Fever, West Nile Fever Myelitis, WNV Infections, West Nile Virus Infection, Infection, WNV, WNV Infection