title: An outbreak of Legionnaires' disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002681:China; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007877:Legionnaires' Disease / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged