Legionnaires' disease associated with hospitals.
D003428:Cross Infection / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D007877:Legionnaires' Disease / Q000453:epidemiology*; D014852:Wales / Q000453:epidemiology