West Nile fever
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Related to West Nile fever: West Nile encephalitis
West Nile fe·ver
febrile illness caused by West Nile virus (q.v.).
West Nile feverWest Nile meningoencephalitis Infectious disease An acute, mosquito-borne flaviviral infection endemic–rarely, epidemic–in the Near East, Africa, former Soviet Union, India Clinical After a 3-6 day incubation, children present with a nonspecific febrile illness; older Pts develop a mild dengue-like disease with fever, rash that clears without desquamation, frontal headaches, orbital pain, backaches, myalgia, anorexia, lymphadenopathy, leukopenia, sore throat and possibly meningoencephalitis in the elderly; usually it is self-limited, and resolves in a wk. See Dengue fever.
West Nile fe·ver(west nīl fē'vĕr)
Infection by West Nile virus, which is spread by mosquitoes. In mild infections, fever, headache, and muscle ache may last a few days. In severe infections, encephalitis, hyperpyrexia, stiff neck, convulsions, paralysis, and coma may last several weeks; resulting deficits may become permanent.
West Nile feverA flavivirus arthropod-borne (arboviral) infection endemic mainly in birds and spread by culicine mosquitoes. The disease causes a feverish illness mainly affecting young children. There is headache muscle pain, enlarged lymph nodes and a rash of slightly raised spots. Widespread epidemics in the USA in 2002-the first reported in the Western hemisphere-featured a high percentage of cases of encephalitis, especially in elderly patients, with a mortality of about 9 per cent. New features were noted, including a poliomyelitis-like involvement of anterior horn cells with muscle paralysis.
West Nile,a province in Uganda where the virus was first discovered in 1937.
West Nile encephalitis virus - a Flavivirus in the family Flaviviridae. Synonym(s): West Nile virus
West Nile fever - a febrile illness caused by West Nile virus, a member of the family Flaviviridae, and characterized by headache, fever, maculopapular rash, myalgia, lymphadenopathy, and leukopenia; spread by Culex mosquitoes.
West Nile virus - Synonym(s): West Nile encephalitis virus