Investigation of nosocomial infection outbreaks.
D003428:Cross Infection / Q000453:epidemiology / Q000209:etiology* / Q000635:transmission; D004196:Disease Outbreaks; D006739:Hospital Administration; D006801:Humans; D013290:Streptococcal Infections / Q000635:transmission; D013297:Streptococcus pyogenes; D013597:Systems Analysis