台湾的多药耐药结核病群和传播:基于人口的队列研究
Kuang-Hung Liu1,2, Yu-Xin Xiao1,2, Ruwen Jou1,2
1Tuberculosis Research Center, Centers for Disease Control, Ministry of Health and Welfare, Taipei, Taiwan.
Frontiers in microbiology
|October 3, 2024
概括
使用全基因组测序的多药耐药结核病 (MDR-TB) 基因定型确定了台湾的传染集群和疫情. 在MDR-TB菌株中的补偿突变可以作为流行病学标志物来中断传播.
科学领域:
- 基因组学就是基因组学.
- 流行病学 流行病学
- 微生物学 微生物学
背景情况:
- 耐多药结核病 (MDR-TB) 对台湾的结核病控制计划构成了重大挑战.
- 很大一部分MDR-TB病例是新诊断的,这凸显了有效的接触者追踪和疫情检测的必要性.
研究的目的:
- 通过全基因组测序 (WGS) 调查台湾MDR-TB的遗传多样性和传播模式.
- 确定MDR-TB的传播集群和疫情,并探索潜在的传播中断的流行病学标记.
主要方法:
- 一项基于人口的回顾性队列研究分析了2019年至2022年的MDR-TB病例.
- 整个基因组测序 (WGS) 在分离物上进行,并使用结核病分析器与遗传学方法分析数据,以根据单核酸多态化 (SNP) 值识别基于单核酸多态化 (SNP) 的传输集群.
- 使用基因组数据与流行病学联系相结合,确认了疫情爆发.
主要成果:
- 主要的MDR-TB菌株是亚系2.2现代北京 (48.8%).
- 遗传学分析显示了20个群体 (25.3%的隔离物),有两个确定的疫情 (一个家庭,一个社区).
- 男性和感染子系2.1-原北京基因型的感染者显示传染风险更高. 补偿突变,特别是在rpoB和rpoC基因中,与聚类有关,特别是在北京基因型菌株中.
结论:
- 建议基于WGS的常规监测用于早期检测和划分MDR-TB传播集群.
- 结核菌菌中的补偿突变可以被用作流行病学标记,以帮助中断MDR-TB传播.
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