title: Staphylococcus aureus bacteremic pneumonia: differences between community and nosocomial acquisition.
abstract: OBJECTIVE
  The aim of the study was to ascertain the clinical and epidemiologic characteristics of patients with nosocomial or community-acquired Staphylococcus aureus bacteremic pneumonia.
  
  
  METHODS
  A prospective study of 134 cases diagnosed between January 1990 and December 1995 was performed.
  
  
  RESULTS
  Fifty cases involved primary bacteremic pneumonias, of which 80% were nosocomial (the majority, 72%, in intensive care unit patients, of whom 57% were post-surgery). Of the 84 cases of secondary pneumonia, 36 were non-intravenous drug users (78% nosocomial, of whom 43% were in the intensive care unit), and 48 cases were intravenous drug users (98% community-acquired).
  
  
  CONCLUSIONS
  Nosocomial S. aureus bacteremic pneumonia was especially frequent in intensive care unit patients (68.1%), and community-acquired pneumonia in intravenous drug users (72.3%). In non-intravenous drug users, clinical outcome and mortality were similar for nosocomial and community-acquired pneumonia.
authors.affiliation: Department of Clinical Microbiology, Hospital Universitario San Carlos, Madrid, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: González
authors.forename: Margarita
authors.initials: M
authors.lastname: Rubio
authors.forename: José
authors.initials: J
authors.lastname: Romero-Vivas
authors.forename: Miguel
authors.initials: M
authors.lastname: González
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Picazo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017714:Community-Acquired Infections / Q000188:drug therapy / Q000453:epidemiology* / Q000401:mortality; D003428:Cross Infection / Q000188:drug therapy / Q000453:epidemiology* / Q000401:mortality; D005260:Female; D006801:Humans; D008297:Male; D008712:Methicillin / Q000494:pharmacology; D016106:Methicillin Resistance; D008875:Middle Aged; D011023:Pneumonia, Staphylococcal / Q000188:drug therapy / Q000453:epidemiology* / Q000401:mortality; D013211:Staphylococcus aureus / Q000187:drug effects; D016896:Treatment Outcome
chemical_list: D008712:Methicillin