North American birds and West Nile virus.
D000818:Animals; D001715:Bird Diseases / Q000821:virology; D046368:Crows / Q000821:virology; D004196:Disease Outbreaks; D005197:Famous Persons; D005544:Forecasting; D049673:History, 20th Century; D006801:Humans; D009656:North America / Q000453:epidemiology; D010151:Paintings / Q000266:history*; D014901:West Nile Fever / Q000453:epidemiology / Q000662:veterinary; D014902:West Nile virus