Molecular Epidemiology of Methicillin-Resistant Staphylococcus aureus, Rural Southwestern Alaska1

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  David, Michael Z. ; Rudolph, Karen M. ; Hennessy, Thomas W. ; Boyle-Vavra, Susan ; Daum, Robert S.
• Description:
  USA300 is the dominant strain responsible for community-associated (CA) methicillin-resistant Staphylococcus aureus (MRSA) infections in most of the United States. We examined isolates from outbreaks of MRSA skin infections in rural southwestern Alaska in 1996 and 2000 (retrospective collection) and from the hospital serving this region in 2004-2006 (prospective collection). Among 36 retrospective collection isolates, 92% carried Panton-Valentine leukocidin (PVL) genes; all carried staphylococcal chromosomal cassette mec (SCCmec) type IV. None belonged to clonal complex (CC) 8, the CC associated with USA300; 57% were sequence type (ST) 1, and 26% were ST30; 61% were clindamycin resistant. In the prospective collection, 42 isolates were PVL+ and carried SCCmec type IV; 83.3% were ST1, 9.5% were ST30, and 7.1% were ST8. Among 120 prospective isolates, 57.5% were clindamycin resistant. CA-MRSA epidemiology in southwestern Alaska differs from that in the lower 48 states; ST8 strains were rarely identified and clindamycin resistance was common.
• Subjects:
  Anti-Bacterial Agents Bacterial Toxins Chromosomes, Bacterial Clindamycin Community-Acquired Infections Drug Resistance, Bacterial Exotoxins Genes, Bacterial Humans Leukocidins Methicillin-Resistant Staphylococcus Aureus Methicillin Resistance Microbial Sensitivity Tests Molecular Epidemiology Research Retrospective Studies Rural Population Staphylococcal Infections Staphylococcal Skin Infections

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• Source:
  Emerg Infect Dis. 14(11):1693-1699
• Pubmed ID:
  18976551
• Pubmed Central ID:
  PMC2630737
• Document Type:
  Journal Article
• Funding:
  1R01AI067584-01A2/AI/NIAID NIH HHS/United States ; 1 U01 CI000384-01/CI/NCPDCID CDC HHS/United States ; R01 CI000373/CI/NCPDCID CDC HHS/United States ; R01 CCR523379/PHS HHS/United States ; R01 AI067584/AI/NIAID NIH HHS/United States ; U01 CI000384/CI/NCPDCID CDC HHS/United States ; R01 CI000373-01/CI/NCPDCID CDC HHS/United States ; R01 AI040481/AI/NIAID NIH HHS/United States ; R01 AI40481-01A1/AI/NIAID NIH HHS/United States
• Place as Subject:
  Alaska
• Location:
  North America
• Volume:
  14
• Issue:
  11
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:efede382d82273fe557260f040efa3d8c6f7cc9db557e87f1e9c58cdd5a9e970
• Download URL:
  https://stacks.cdc.gov/view/cdc/17262/cdc_17262_DS1.pdf
• File Type:
  [PDF - 205.44 KB ]