病毒性ST5-SCC的特征
Lei Huang1,2, Chengcheng Liu1,2, Zhanjie Li3
1Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.
Infection and drug resistance
|June 9, 2023
概括
在胰腺外科病房中,一种特定的抗甲素黄金葡萄球菌 (MRSA) 克隆 (ST5-MRSA-II-t311) 普遍存在. 这种MRSA菌株对手术后在医院获得的感染构成重大风险,强调需要严格的卫生协议.
科学领域:
- 医学微生物学 医学微生物学
- 传染性疾病 传染性疾病
- 流行病学 流行病学
背景情况:
- 医院感染 (HAI) 对患者的安全构成重大威胁,特别是在手术环境中.
- 甲素耐药黄金葡萄球菌 (MRSA) 是HAI的主要原因,需要对其传播动态进行调查.
- 了解MRSA疫情的分子流行病学对于实施有效的控制措施至关重要.
研究的目的:
- 在胰腺手术病房调查甲素耐药黄金葡萄球菌 (MRSA) 患病率的传播途径.
- 为了确定负责病房感染的特定MRSA克隆.
- 确定循环中的MRSA菌株的遗传特征,包括耐药性和毒性因素.
主要方法:
- 采用了分子流行病学技术,包括脉冲场凝电泳 (PFGE),多位数序列类型 (MLST) 和SCCmec类型.
- 整个基因组测序是在MRSA分离物上进行的.
- 聚合酶链反应 (PCR) 用于检测特定的耐药性和毒性基因. 细菌鉴定和抗生素敏感性测试 (AST) 使用维特克2紧系统进行.
主要成果:
- 从2020年1月到5月,分离了20种MRSA菌株,其中19种属于PFGE模式A.
- 所有患者和环境隔离物被确定为序列类型ST5-SCCmec II-spa类型t311.1.
- 这种MRSA克隆携带多个耐药性基因 (例如,mecA,blaZ) 和病毒性基因 (例如,tst,hlg,hla).
- 患有MRSA感染的患者经常发烧,并且最近接受过手术或侵入性手术.
结论:
- 一种特定的MRSA克隆 (ST5-MRSA-II-t311) 被证实在胰腺外科病房中普遍存在.
- 鉴于MRSA被确定为手术后医院感染的重要危险因素.
- 加强手部卫生实践和持续的环境监测对于防止医疗机构中MRSA传播至关重要.
关键词:
在SCCmec II上进行了SCCmec II.ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5 ST5腹 腹 腹 腹 腹 腹甲基西林耐药性 黄金 Staphylococcus 黄金菌这是一个t31111型spa型.病毒性基因是病毒性基因.更多相关视频
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