title: Nosocomial Serratia outbreak: guilt by association or scientific investigation?
mesh_terms: D003428:Cross Infection / Q000209:etiology*; D004196:Disease Outbreaks / Q000209:etiology; D004340:Drug Contamination; D004756:Enterobacteriaceae Infections / Q000209:etiology*; D006801:Humans; D012706:Serratia marcescens / Q000302:isolation & purification*