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Community-associated methicillin-resistant Staphylococcus aureus and healthcare risk factors.

  • Author(s): Klevens, R Monina
  • Morrison, Melissa A
  • Fridkin, Scott K
  • Reingold, Arthur
  • Petit, Susan
  • Gershman, Ken
  • Ray, Susan
  • Harrison, Lee H
  • Lynfield, Ruth
  • Dumyati, Ghinwa
  • Townes, John M
  • Craig, Allen S
  • Fosheim, Gregory
  • McDougal, Linda K
  • Tenover, Fred C
  • Active Bacterial Core Surveillance of the Emerging Infections Program Network
  • et al.

To determine frequency of methicillin-resistant Staphylococcus aureus infections caused by strains typically associated with community-acquired infections (USA300) among persons with healthcare-related risk factors (HRFs), we evaluated surveillance data. Of patients with HRFs, 18%-28% had a "community-associated" strain, primarily USA300; of patients without HRFs, 26% had a "healthcare-associated" strain, typically USA100.

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