Witzel Claudia de Lima, Fortaleza Carlos Magno Castelo Branco, de Souza Camila Sena Martins, Riboli Danilo Flávio Moraes, da Cunha Maria de Lourdes Ribeiro de Souza
Department of Microbiology and Immunology, Biosciences Institute, UNESP - Univ Estadual Paulista, Botucatu, SP, Brazil.
Ann Clin Microbiol Antimicrob. 2014 Jul 2;13:25. doi: 10.1186/1476-0711-13-25.
Previous studies report high prevalence of Methicillin-resistant Staphylococcus aureus (MRSA) colonization among imprisoned populations. However, there are no data on that prevalence in Brazilian correctional institutions.
We tested 302 male prisoners for nasopharyngeal colonization with Staphylococcus aureus from February 2009 through April 2010. The overall isolation rate of S. aureus was 16.5% (50/302). Men who had sex with men, users of inhalatory drugs and those with previous lung or skin diseases were more likely to be colonized with S. aureus. MRSA was isolated from 0.7% of subjects (2/302). The two Community-associated (CA)-MRSA belonged to ST5 but were unrelated based on the PFGE results. Both harbored SCCmec IV, and did not possess the Panton-Valentine Leukocidin gene.
We found low prevalence of S. aureus and CA-MRSA among prisoners. MRSA isolates ST5 from two subjects harboured SCCmec IV and presented different PFGE patterns.
先前的研究报告称，耐甲氧西林金黄色葡萄球菌（MRSA）在被监禁人群中的定植率很高。然而，巴西惩教机构中该定植率的数据尚无相关报道。
从2009年2月至2010年4月，我们对302名男性囚犯进行了鼻咽部金黄色葡萄球菌定植检测。金黄色葡萄球菌的总体分离率为16.5%（50/302）。与男性发生性行为者、吸入性药物使用者以及既往有肺部或皮肤疾病者更易被金黄色葡萄球菌定植。0.7%的受试者（2/302）分离出了MRSA。两株社区相关性（CA）-MRSA属于ST5，但基于脉冲场凝胶电泳（PFGE）结果显示二者不相关。二者均携带SCCmec IV，且不具有杀白细胞素基因。
我们发现囚犯中金黄色葡萄球菌和CA-MRSA的患病率较低。从两名受试者分离出的ST5型MRSA菌株携带SCCmec IV，且呈现出不同的PFGE图谱。
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