• Vol. 42 No. 11, 575–578
  • 15 November 2013

An Outbreak of Community Associated Methicillin Resistant Staphylococcus aureus Subtype USA300 at an International School in Singapore



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Community associated methicillin-resistant Staphylococcus aureus (CA-MRSA) subtype USA300 remains relatively well confined within North American shores. Between August and November 2010, a large international school in Singapore recorded 27 skin and soft tissue infections, 8 of which were confirmed USA 300. This study reports the outbreak investigation and the interventions instituted.

Methicillin resistant Staphylococcus aureus (MRSA) can be classified epidemiologically (hospital or community associated), genotypically and phenotypically. Over the last decade, pulse field gel electrophoresis (PFGE) type USA300 has become the dominant strain isolated from skin and soft tissue infections (SSTIs) arising in the community in the US. The incidence of SSTIs in the United States (US) over the last decade has increased 2- to 3-fold, largely due to the emergence of this highly pathogenic strain.

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