基因组表征和SNP分析将由Mycobacterium intracellulare引起的呼吸道感染与游泳池设施联系起来
Caitlin A Selway1, Lisa Shephard1, Michaela Hobby2
1Microbiology and Infectious Disease, SA Pathology, Adelaide, SA 5000, Australia.
Microbial genomics
|December 1, 2025
概括
一组由Mycobacterium intracellulare引起的肺部感染与游泳池有关. 基因组分析证实了游泳池是这些呼吸道病原体感染的可能来源.
科学领域:
- 环境微生物学环境微生物学
- 基因组流行病学基因组流行病学
- 传染性疾病传染性疾病.
背景情况:
- 非结核菌 (NTM) 越来越多地被认为是重要的呼吸道病原体.
- 这些机会性病原体可以在经过处理的水系统中壮成长和持续存在,构成公共卫生风险.
- 2018年在澳大利亚发生了Mycobacterium细胞内肺部感染的特定群体.
研究的目的:
- 调查游泳池设施与Mycobacterium细胞内肺部感染群之间的联系.
- 通过流行病学和基因组数据来确定该池是否是疫情爆发的点源.
- 描述从临床病例和环境中分离的M. intracellulare的遗传关系.
主要方法:
- 对M.细胞内肺部感染的四个临床病例的流行病学调查.
- 从患者的唾液和游泳池水样本中分离和识别细胞内M.
- 整个基因组测序 (WGS) 的M.细胞内分离物.
- 核心基因组单核酸多态性 (SNP) 分析用于高分辨率的基因组学比较.
主要成果:
- 从患者的唾液样本和游泳池水中成功分离了M. intracellulare.
- 所有临床和环境分离物属于相同的序列类型 (ST 210).
- WGS和SNP分析表明,患者和池隔离物紧密聚类,与其他M.细胞内菌株不同,强烈暗示池是来源.
结论:
- 这项研究提供了强有力的证据,表明游泳池是Mycobacterium细胞内疫情的起源.
- 这凸显了处理过的水系统作为呼吸道病原体的储的潜力.
- 综合流行病学和基因组学方法对于识别传染病爆发的来源至关重要.
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