title: Nosocomial outbreak of nitrate-negative Serratia marcescens infections.
abstract: Bacteremia due to multiply-antibiotic-resistant Serratia marcescens occurred within 1 week in four patients who were in adjacent beds in an intensive care unit. The strains were serotyped as O14:H12 and were nitrate negative. This unusual biochemical marker was useful in the investigation of the outbreak.
mesh_terms: D000368:Aged; D003428:Cross Infection / Q000382:microbiology*; D004196:Disease Outbreaks; D004756:Enterobacteriaceae Infections / Q000382:microbiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009566:Nitrates / Q000378:metabolism; D018805:Sepsis / Q000382:microbiology*; D012703:Serotyping; D012706:Serratia marcescens / Q000145:classification / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D009566:Nitrates