From the Centers for Disease Control. Arboviral disease--United States, 1991.
D004196:Disease Outbreaks; D004663:Encephalitis Virus, Eastern Equine; D004667:Encephalitis Virus, Western Equine; D004670:Encephalitis, California / Q000453:epidemiology; D004674:Encephalitis, St. Louis / Q000453:epidemiology; D004683:Encephalomyelitis, Equine / Q000453:epidemiology; D006801:Humans; D014036:Togaviridae Infections / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology