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Response to Emerging Infection Leading to Outbreak of Linezolid-Resistant Enterococci

机译:对新发感染的反应导致耐利奈唑胺的肠球菌爆发

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摘要

Linezolid was approved in 2000 for treatment of gram-positive coccal infections. We performed a case-control study during a hospital outbreak of linezolid-resistant enterococci (LRE) infections, comparing cases of LRE infection (cases) with linezolid-sensitive enterococci infections (controls). Nasal and perirectal swab samples were obtained from all patients in a 1-day point-prevalence survey. We examined antimicrobial drug use and calculated the defined daily dose of linezolid per 1,000 patient-days. Fifteen LRE cases were identified (13 Enterococcus faecalis and 2 E. faecium); 7 were vancomycin-resistant. Compared with controls, case-patients had increased in-hospital mortality rates and lengths of stay. Multivariate analysis identified independent predictors of LRE infection: prior cultures positive for methicillin-resistant Staphylococcus aureus (adjusted odds ratio [AOR] 27), hospitalization duration before index culture (AOR 1.1 per day), and duration of preceding linezolid therapy (AOR 1.1 per day). Linezolid exposure and patient-to-patient transmission appear to be responsible for LRE infections, an important emerging hospital problem.
机译:利奈唑胺于2000年被批准用于治疗革兰氏阳性球菌感染。我们在医院对linezolid耐药的肠球菌(LRE)感染暴发期间进行了一项病例对照研究,比较了LRE感染的病例(病例)与linezolid敏感的肠球菌感染(对照)。在为期1天的点流行调查中,从所有患者获得鼻和直肠周拭子样本。我们检查了抗菌药物的使用情况,并计算了每1,000名患者-天的利奈唑胺的每日定义剂量。鉴定出15例LRE病例(13例粪肠球菌和2例粪肠球菌); 7例对万古霉素耐药。与对照组相比,案例患者的住院死亡率和住院时间均有所增加。多变量分析确定了LRE感染的独立预测因素:耐甲氧西林金黄色葡萄球菌的既往培养阳性(校正比值比[AOR] 27),指数培养前的住院时间(每天AOR 1.1)和先前利奈唑胺治疗的持续时间(每次AOR 1.1)天)。利奈唑胺暴露和患者之间的传播似乎是导致LRE感染的原因,LRE感染是一个重要的新兴医院问题。

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