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首页> 外文期刊>The Journal of the American Dental Association >Isolation of staphylococcus aureus from environmental surfaces in an academic dental clinic
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Isolation of staphylococcus aureus from environmental surfaces in an academic dental clinic

机译：在学术牙科诊所中从环境表面分离金黄色葡萄球菌

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Background. Staphylococcus aureus is an important health care-associated pathogen that often is resistant to antibiotics. The authors conducted a pilot study to determine if abiotic surfaces in a dental clinic were contaminated frequently. Methods. The authors sampled surfaces with swabs that they then used to inoculate selective and differential media. CHROMagar Staph aureus (DRG International, Mountainside, N.J.) was the most effective. They used phenotypic and genotypic tests to identify presumptive S. aureus colonies. They determined the sensitivity of S. aureus isolates to five antibiotics, including oxacillin, according to the Kirby-Bauer method. Results. The authors recovered S. aureus from 20 of 429 surfaces (4.7 percent). Most isolates were resistant to penicillin but none were resistant to the other antibiotics. No isolate carried the mecA gene encoding resistance to methicillin. The authors considered one site to be highly contaminated ( 200 colony-forming units [CFU s]), but all other sites that tested positive yielded fewer than 5 CFU s. Conclusions. Abiotic surfaces in the authors' dental clinic were not a reservoir for methicillin-resistant S. aureus. The authors identified and eliminated one nonclinical site of potential methicillin-sensitive S. aureus cross-contamination. Clinical Implications. Periodic sampling of surfaces for S. aureus may be a useful adjunct to standard infection control practices in dental health care settings.
机译：背景。金黄色葡萄球菌是一种重要的保健相关病原体，通常对抗生素具有抗性。作者进行了一项初步研究，以确定牙科诊所中的非生物表面是否经常被污染。方法。作者用棉签采样了表面，然后将它们用于接种选择性和差异培养基。 CHROMagar Staph aureus（DRG International，新泽西州山腰）最有效。他们使用表型和基因型测试来鉴定推测的金黄色葡萄球菌菌落。他们根据Kirby-Bauer方法确定了金黄色葡萄球菌分离株对五种抗生素（包括奥沙西林）的敏感性。结果。作者从429个表面中的20个中恢复了金黄色葡萄球菌（4.7％）。大多数分离株对青霉素有抗药性，但没有一个对其他抗生素有抗药性。没有分离株携带编码对甲氧西林抗性的mecA基因。作者认为一个位点被高度污染（> 200个菌落形成单位[CFU s]），但其他所有检测结果呈阳性的位点都少于5个CFU s。结论。作者牙科诊所中的非生物表面不是耐甲氧西林金黄色葡萄球菌的储藏库。这组作者确定并消除了一个可能对甲氧西林敏感的金黄色葡萄球菌交叉污染的非临床部位。临床意义。定期采样金黄色葡萄球菌可能是牙科保健机构中标准感染控制措施的有用辅助手段。

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