West Nile virus in the Americas.
D000818:Animals; D009033:Culicidae / Q000821:virology; D006801:Humans; D007303:Insect Vectors; D008873:Mid-Atlantic Region / Q000453:epidemiology; D009511:New England / Q000453:epidemiology; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology* / Q000635:transmission; D014902:West Nile virus / Q000502:physiology