An innovative approach to surveillance of nosocomial outbreaks.
D001419:Bacteria / Q000302:isolation & purification; D003428:Cross Infection / Q000517:prevention & control*; D004196:Disease Outbreaks / Q000517:prevention & control*; D006746:Hospital Bed Capacity, 500 and over; D006757:Hospital Units; D006801:Humans; D010414:Pennsylvania; D011159:Population Surveillance