title: Legionnaires' disease.
mesh_terms: D004196:Disease Outbreaks; D005060:Europe; D005260:Female; D006801:Humans; D007877:Legionnaires' Disease / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D012141:Respiratory Tract Infections / Q000175:diagnosis*; D014481:United States