Nosocomial infections.
D001424:Bacterial Infections / Q000635:transmission; D003428:Cross Infection / Q000209:etiology / Q000382:microbiology / Q000517:prevention & control; D006801:Humans; D009181:Mycoses / Q000635:transmission; D012122:Ventilators, Mechanical; D014777:Virus Diseases / Q000635:transmission