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[Incidence of nosocomial infections in a military hospital].

Over a 2-year period, 479 cases of nosocomial infections were identified in our hospital by a surveillance method based on the bacteriological laboratory results. The monthly incidence rate ranged from 1.8 to 4 percent of all in-patients. With this method, a 2 percent background noise and a 4 percent alarm threshold could be defined. The most frequent nosocomial infections were urinary tract infections (77 percent), purulent skin infections (12 percent) and septicaemias (10 percent). Compared during 15 days with the most sensitive surveillance method of the National Nosocomial Infections Surveillance System, our method proved insufficient to detect nosocomial lung infections and superficial surgical wound infections. On the other hand, it was highly satisfactory to watch for urinary tract infections and septicaemias. Improvements that would not put a heavy burden on the work of clinical departments are suggested.