West Nile Fever

**Definition:** 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)

**Tree numbers:** - C01.207.245.340.300.887 - C01.207.399.750.300.887 - C01.920.313.156.950 - C01.920.852.500.950 - C01.925.081.343.950 - C01.925.182.525.300.850 - C01.925.782.310.950 - C01.925.782.350.250.900 - C10.228.140.430.520.750.300.887 - C10.228.228.245.340.300.887 - C10.228.228.399.750.300.887 - C10.586.250.520.750.300.887

**Synonyms:** - West Nile Virus Infection - WNV Infection