Pittsburgh pneumonia agent may be a common cause of nosocomial pneumonia: seroepidemiologic evidence.
D001424:Bacterial Infections / Q000453:epidemiology; D003428:Cross Infection / Q000382:microbiology*; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D010414:Pennsylvania; D011014:Pneumonia / Q000382:microbiology*; D012189:Retrospective Studies; D012698:Serologic Tests