variants:
or less commonly West Nile
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 or West Nile fever : the illness caused by West Nile virus
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Time Traveler for West Nile virus
The first known use of West Nile virus was in 1940
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