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Volume 11, Number 6—June 2005

Research

Methicillin-resistant Staphylococcus aureus and Vancomycin-resistant Enterococci in Rural Communities, Western United States

Kurt B. Stevenson*†Comments to Author , Katy Searle†, Gregory Stoddard†, and Matthew H. Samore†‡
Author affiliations: *Qualis Health, Boise, Idaho, USA; †University of Utah School of Medicine, Salt Lake City, Utah, USA; ‡VA Salt Lake City Health Care System, Salt Lake City, Utah, USA

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Table 3

Comparison of antimicrobial susceptibilities by category

Agent No. susceptible (%) p value†
HA-MRSA CA-MRSA with CFs CA-MRSA without CFs
Oxacillin 0/204 (0) 0/34 (0) 0/106 (0) NS
Erythromycin 10/193 (5) 3/34 (9) 16/98 (16) 0.007
Clindamycin 42/195 (22) 11/34 (32) 61/100 (61) <0.0001
Ciprofloxacin 9/138 (7) 2/19 (11) 23/73 (32) <0.0001
Gentamicin 196/204 (96) 33/34 (97) 99/105 (94) NS
Trimethoprim-sulfamethoxazole 202/203 (99) 34/34 (100) 102/106 (96) NS
Rifampin 157/166 (95) 23/24 (96) 79/82 (96) NS
Tetracycline 183/190 (96) 25/27 (93) 93/101 (92) NS
Vancomycin 203/203 (100) 33/33 (100) 105/106 (99)‡ NS

*HA, healthcare-associated; MRSA, methicillin-resistant Staphylococcus aureus; CA, community-associated; CFs, coexisting factors; NS, not significant.
†Based on Fisher exact test.
‡One isolate reported as vancomycin resistant. Isolate not available for confirmatory testing.

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