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回顾印度乌纳奥的C型肝炎病毒疫情动态,通过遗传学方法来研究

Ajit Patil¹, Pallavi Vidhate², Sandip Patil³

¹HIV Drug Resistance Laboratory-ICMR-National Institute of Translational Virology and AIDS Research, Pune, Maharashtra, India.

|January 17, 2025

概括

印度Unnao的C型肝炎病毒 (HCV) 传播,由于不安全的注射,迅速传播,起源于Chakmeerapur,并影响了Premganj. 遗传学分析显示,从2016-2017年开始,疫情爆发阶段呈指数级.

科学领域:

* 公共卫生病毒学
* 流行病学流行病学
* 分子进化过程中的分子进化.

背景情况:

* 病毒性肝炎,特别是C型肝炎病毒 (HCV),对全球健康造成重大负担.
*在2017-2018年印度北方邦乌纳乌市的人类免疫缺陷病毒 (HIV) 调查期间检测到HCV疫情.
* 疫情与阳性传播有关,特别是在医疗治疗期间使用不安全的注射器和针头.

研究的目的:

* 分析乌纳奥HCV疫情的传播联系和进化动态.
* 为了研究循环的HCV菌株的家族遗传特征.
* 了解阳性HCV传播的时空传播和人群动态.

主要方法:

*从乌纳奥疫情中对67个HCV序列的家族遗传学分析.
* 时间尺度上的族系学来估计爆发的开始和进展.
*植物地理分析以推断病毒起源和人口动态.

主要成果:

* 遗传学分析证实,在疫情爆发时的HCV序列中存在共同的祖先.
* 时间尺度上的基因组表示主要在2015-2016年期间启动的疫情群.
* 传播动态显示了从2016-2017年开始的指数级增长阶段,繁殖数量很高.
* 植物地理学确定Chakmeerapur是可能的来源,Premganj拥有有效人口规模的两倍.

结论:

*这项研究提供了详细的流行病学快照,说明了北方普拉德什州乌纳奥发生的阳性性HCV疫情.
*不安全的医疗做法对HCV的快速和广泛传播作出了重大贡献.
*了解进化动态和传播途径对于控制类似疫情至关重要.

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