title: Nosocomial gram-negative infections.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification; D001424:Bacterial Infections / Q000453:epidemiology*; D002175:Candida / Q000302:isolation & purification; D003428:Cross Infection / Q000382:microbiology*; D006801:Humans; D013210:Staphylococcus / Q000302:isolation & purification; D013291:Streptococcus / Q000302:isolation & purification