title: West Nile virus activity--United States, 2005.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D001717:Birds / Q000821:virology; D002648:Child; D002675:Child, Preschool; D009033:Culicidae / Q000821:virology; D004285:Dogs / Q000821:virology; D005260:Female; D006736:Horses / Q000821:virology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology*; D014902:West Nile virus / Q000302:isolation & purification