Dictionary

West Nile virus

noun

Definition of WEST NILE VIRUS

1
:  a flavivirus (species West Nile virus of the genus Flavivirus) that causes an illness marked by fever, headache, muscle ache, skin rash, and sometimes encephalitis or meningitis and that is spread especially from birds to humans by mosquitoes
2
:  the illness caused by West Nile virus

Origin of WEST NILE VIRUS

from West Nile province of Uganda, where the virus was isolated in 1937
First Known Use: 1940
Medical Dictionary

West Nile virus

noun

Medical Definition of WEST NILE VIRUS

:  a single-stranded RNA virus of the genus Flavivirus (species West Nile virus) that causes an illness marked by fever, headache, muscle ache, skin rash, and sometimes encephalitis or meningitis, that is spread chiefly by mosquitoes, and that is closely related to the viruses causing Japanese B encephalitis and Saint Louis encephalitis; also :  west nile fever

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June 30, 2015
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