Arboviral surveillance--United States, 1990.
D000818:Animals; D001717:Birds; D002645:Chickens; D004196:Disease Outbreaks / Q000517:prevention & control*; D004663:Encephalitis Virus, Eastern Equine; D004674:Encephalitis, St. Louis / Q000453:epidemiology* / Q000517:prevention & control; D004683:Encephalomyelitis, Equine / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D009032:Mosquito Control; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology