Community-acquired methicillin-resistant Staphylococcus aureus in hospitalized adults and children without known risk factors

Clin Infect Dis. 1999 Oct;29(4):797-800. doi: 10.1086/520437.


Community-acquired methicillin-resistant Staphylococcus aureus (MRSA) infections are not commonly recognized in healthy patients without predisposing risk. We performed a retrospective study of patients hospitalized with community-acquired MRSA infections from 1992 to 1996 in Honolulu to determine if community-acquired MRSA infections occurred in patients without known risk. Patients hospitalized within the previous 6 months or transferred from other hospitals or nursing homes were excluded. Epidemiological and clinical data were obtained from an inpatient chart review. Ten (71%) of 14 patients with community-acquired MRSA infection had no discernible characteristics of MRSA infections. Thirteen (93%) patients had skin or soft-tissue infections and one patient had MRSA pneumonia. Isolates from patients with MRSA infection were more likely to be susceptible to ciprofloxacin (P = .05), clindamycin (P = .03), and erythromycin (P = .01) than were those from MRSA-colonized patients. In our population, the majority of community-acquired MRSA infections occurred in previously healthy individuals without characteristics suggestive of MRSA transmission.

MeSH terms

  • Adolescent
  • Adult
  • Child, Preschool
  • Community-Acquired Infections / drug therapy*
  • Female
  • Hospitalization
  • Humans
  • Male
  • Methicillin Resistance*
  • Retrospective Studies
  • Risk Factors
  • Staphylococcal Infections / drug therapy*