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Emerg Infect Dis. 2012 Oct;18(10):1557-65. doi: 10.3201/eid1810.120468.

Methicillin-resistant Staphylococcus aureus sequence type 239-III, Ohio, USA, 2007-2009.

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1
Ohio State University Wexner Medical Center, Columbus, Ohio 43210, USA. shu-hua.wang@osumc.edu

Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) is a human pathogen that has diverse molecular heterogeneity. Most MRSA strains in the United States are pulsed-field gel electrophoresis USA100 sequence type (ST) 5 and USA300 ST8. Infections with MRSA ST239-III are common and found during health care-associated outbreaks. However, this strain has been rarely reported in the United States. As part of a study supported by the Prevention Epicenter Program of the Centers for Disease Control and Prevention (Atlanta, GA, USA), which evaluated transmission of MRSA among hospitals in Ohio, molecular typing identified 78 (6%) of 1,286 patients with MRSA ST239-III infections. Ninety-five percent (74/78) of these infections were health care associated, and 65% (51/78) of patients had histories of invasive device use. The crude case-fatality rate was 22% (17/78). Identification of these strains, which belong to a virulent clonal group, emphasizes the need for molecular surveillance.

PMID:
23018025
PMCID:
PMC3471631
DOI:
10.3201/eid1810.120468
[Indexed for MEDLINE]
Free PMC Article
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