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Am J Infect Control. 2014 Jun;42(6):591-6. doi: 10.1016/j.ajic.2014.02.019.

Environment surface sampling in 33 Washington State fire stations for methicillin-resistant and methicillin-susceptible Staphylococcus aureus.

Author information

1
Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, WA. Electronic address: marilynr@u.washington.edu.
2
Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, WA.

Abstract

BACKGROUND:

Methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-susceptible S aureus (MSSA) were isolated from environment surfaces sampled from 33 Washington State fire stations.

METHODS:

Samples were collected by fire personnel using commercial testing swabs. One to 6 surfaces were sampled per swab with 20 swabs per station. Biochemical tests were used to confirm MRSA and MSSA isolates. A short survey designed to collect information on cleaning procedures in the stations was included in the kits.

RESULTS:

MRSA was isolated from 8.0% and MSSA from 18.5% of the 653 samples. Nineteen fire stations (58.0%) were MRSA positive, 27 stations (82.0%) were MSSA positive, and 14 stations (42.4%) were positive for both MSSA and MRSA. Three stations (9.0%) were negative for MSSA and MRSA. Twelve fire stations (37.5%) reported fire service professionals with MRSA needing medical care. Positive controls were detected at levels of >10(2) CFU/mL and negative controls were negative.

CONCLUSIONS:

The kit system allowed sampling of >2,000 surfaces from fire stations across Washington State. This is the first time an estimate of the level of MRSA-infected fire personnel has been determined from multiple districts within a single state. Further work is needed to determine if these data can be extrapolated to other career-based fire stations across the country.

KEYWORDS:

Fire station disinfection protocols; MRSA; MSSA; Staphylococcal sample kit

PMID:
24837108
DOI:
10.1016/j.ajic.2014.02.019
[Indexed for MEDLINE]

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