West Nile
/wɛst ˈnʌɪl/Virology and Medicine
noun
1Attributive Designating the human disease caused by this virus, a febrile illness often complicated by encephalitis or meningitis; especially in West Nile fever.
2= West Nile virus.
Origin
1940s (in an earlier sense). From West Nile, name of a district of northwestern Uganda, where the virus was first isolated.