[中国食品传播黄金葡萄球菌的种群结构]
1Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
概括
中国主要的食源性黄金葡萄球菌克隆复合体与医院菌株重叠,强调食物是社区感染和食物中毒的传播途径. 这强调了需要对食品安全保持警,以防止病原体的传播.
科学领域:
- 微生物学与传染病的研究
- 食品安全与公共卫生问题
- 基因组学和分子流行病学
背景情况:
- 金黄色葡萄球菌 (Staphylococcus aureus) 是一种重要的食物传播病原体.
- 了解其人口结构对于控制食物中毒疫情至关重要.
- 之前的研究已经描述了中国的医院和社区相关菌株.
研究的目的:
- 为了阐明中国食品传播黄金葡萄球菌的种群结构.
- 为了确定占主导地位的克隆复合体及其与临床菌株的关系.
- 评估食物在黄金葡萄球菌传播中的作用.
主要方法:
- 来自中国16个省份 (2006-2020年) 的763种食源性金黄色葡萄球菌菌株的全基因组测序.
- 进行了多位元序列排版 (MLST),spa排版和SCCmec排版.
- 基因组的遗传树构造,包括来自进口食品的31个菌株.
主要成果:
- 确定了90种序列类型 (ST) 和160种间型,其中有20种新型ST.
- 主要的克隆复合体 (CC) 包括CC7,CC1,CC5,CC398,CC188,CC59,CC6,CC88,CC15和CC25,占82.44%的分离物.
- 在7.60%的菌株中检测到抗甲素的金黄色葡萄球菌 (MRSA),确定了特定的SCCmec类型和ST;进口菌株显示远程集群.
结论:
- 在中国,主要的食源性黄金葡萄球菌CC与在医院和社区环境中发现的重叠.
- 这种重叠表明,食物是病原体传播的重要载体,有助于社区感染和食物中毒.
- 持续监测和关注食品安全对于减轻黄金葡萄球菌传播至关重要.
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