Epidemic histoplasmosis.
D000293:Adolescent; D000328:Adult; D000368:Aged; D004196:Disease Outbreaks / Q000453:epidemiology*; D005260:Female; D006660:Histoplasmosis / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014481:United States