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The Environment as an Unrecognized Reservoir for Community-Associated Methicillin Resistant Staphylococcus aureus USA300: A Case-Control Study

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Listed:
  • Anne-Catrin Uhlemann
  • Justin Knox
  • Maureen Miller
  • Cory Hafer
  • Glenny Vasquez
  • Megan Ryan
  • Peter Vavagiakis
  • Qiuhu Shi
  • Franklin D Lowy

Abstract

Background: Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) infections are spreading, but the source of infections in non-epidemic settings remains poorly defined. Methods: We carried out a community-based, case-control study investigating socio-demographic risk factors and infectious reservoirs associated with MRSA infections. Case patients presented with CA-MRSA infections to a New York hospital. Age-matched controls without infections were randomly selected from the hospital's Dental Clinic patient population. During a home visit, case and control subjects completed a questionnaire, nasal swabs were collected from index respondents and household members and standardized environmental surfaces were swabbed. Genotyping was performed on S. aureus isolates. Results: We enrolled 95 case and 95 control subjects. Cases more frequently reported diabetes mellitus and a higher number of skin infections among household members. Among case households, 53 (56%) were environmentally contaminated with S. aureus, compared to 36 (38%) control households (p = .02). MRSA was detected on fomites in 30 (32%) case households and 5 (5%; p

Suggested Citation

  • Anne-Catrin Uhlemann & Justin Knox & Maureen Miller & Cory Hafer & Glenny Vasquez & Megan Ryan & Peter Vavagiakis & Qiuhu Shi & Franklin D Lowy, 2011. "The Environment as an Unrecognized Reservoir for Community-Associated Methicillin Resistant Staphylococcus aureus USA300: A Case-Control Study," PLOS ONE, Public Library of Science, vol. 6(7), pages 1-9, July.
    • Handle: RePEc:plo:pone00:0022407
    DOI: 10.1371/journal.pone.0022407
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