West Nile virus in the USA--an update.
Carlson
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D025041:Animal Migration; D000818:Animals; D001717:Birds / Q000821:virology; D004197:Disease Reservoirs / Q000662:veterinary; D006801:Humans; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology* / Q000821:virology; D014902:West Nile virus