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首页> 外文期刊>Journal of Clinical Microbiology >Environmental Contamination by Carbapenem-Resistant Enterobacteriaceae
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Environmental Contamination by Carbapenem-Resistant Enterobacteriaceae

机译：耐碳青霉烯的肠杆菌科细菌对环境的污染

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In the last decade, the global emergence of carbapenem resistance in Enterobacteriaceae has posed great concern to public health. Data concerning the role of environmental contamination in the dissemination of carbapenem-resistant Enterobacteriaceae (CRE) are currently lacking. Here, we aimed to examine the extent of CRE contamination in various sites in the immediate surroundings of CRE carriers and to assess the effects of sampling time and cleaning regimens on the recovery rate. We evaluated the performance of two sampling methods, CHROMAgar KPC contact plate and eSwab, for the detection of environmental CRE. eSwab was followed either by direct plating or by broth enrichment. First, 14 sites in the close vicinity of the carrier were evaluated for environmental contamination, and 5, which were found to be contaminated, were further studied. The environmental contamination decreased with distance from the patient; the bed area was the most contaminated site. Additionally, we found that the sampling time and the cleaning regimen were critical factors affecting the prevalence of environmental CRE contamination. We found that the CHROMAgar KPC contact plate method was a more effective technique for detecting environmental CRE than were eSwab-based methods. In summary, our study demonstrated that the vicinity of patients colonized with CRE is often contaminated by these organisms. Using selective contact plates to detect environmental contamination may guide cleaning efficacy and assist with outbreak investigation in an effort to limit the spread of CRE.
机译：在过去的十年中，肠杆菌科中碳青霉烯耐药性的全球出现引起了公众健康的极大关注。当前缺乏有关环境污染在耐碳青霉烯的肠杆菌科细菌（CRE）传播中的作用的数据。在这里，我们旨在检查在CRE载体附近环境中各个位置的CRE污染程度，并评估采样时间和清洁方案对回收率的影响。我们评估了CHROMAgar KPC接触板和eSwab这两种采样方法在检测环境CRE中的性能。 eSwab之后是直接铺板或肉汤富集。首先，对靠近载体的14个位置进行了环境污染评估，并对5个被污染的位置进行了进一步研究。环境污染随着与患者之间距离的增加而降低;床区是污染最严重的地方。此外，我们发现采样时间和清洁方案是影响环境CRE污染发生率的关键因素。我们发现，与基于eSwab的方法相比，CHROMAgar KPC接触板方法是一种更有效的环境CRE检测技术。总而言之，我们的研究表明，定植在CRE的患者附近经常被这些生物污染。使用选择性接触板检测环境污染可指导清洁效果并协助爆发调查，以限制CRE的扩散。

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