title: Nosocomial Legionnaires' disease in the Quebec City area.
mesh_terms: D000368:Aged; D003428:Cross Infection / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007877:Legionnaires' Disease / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D011792:Quebec; D014505:Urban Population; D014881:Water Supply / Q000009:adverse effects