title: Human, animal cases of West Nile continue to climb. Virus identified in small number of new animal species.
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D000835:Animals, Wild; D004196:Disease Outbreaks; D006801:Humans; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology* / Q000635:transmission; D014902:West Nile virus / Q000472:pathogenicity; D015047:Zoonoses