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2009年至2020年间在中国天津流通的红疹病毒的分子流行病学,传播和演变

Yanzhen Han^1,2, Yue Lei^1,2, Zhichao Zhuang^1,2

¹Tianjin Centers for Disease Control and Prevention, Institute of Microbiology, Tianjin, China.

Journal of medical virology

|December 21, 2024

概括

这项研究追踪了2009-2020年天津的红疹病毒 (RV),发现季节性疫情并确定遗传系. 持续的监测和高的疫苗接种率是消除红疹的关键.

科学领域:

病毒学病毒学
流行病学流行病学
公共卫生公共卫生

背景情况:

消除红疹病毒 (RV) 是世卫组织设定的全球卫生优先事项.
了解红疹流行病学和遗传多样性对于有效的控制策略至关重要.

研究的目的:

调查2009年至2020年中国天津红疹的流行病学模式和遗传特征.
提供基线基因型数据,用于监测红疹疫情控制工作.
为了识别潜在的红疹病毒重组事件.

主要方法:

从2009年到2020年,对红疹病例进行基于实验室的监测.
从喉抽样中分离和测序红疹病毒菌株.
遗传学分析和核酸同质性比较.
全基因组测序选择的分离物.
对病例分布,季节性和人口统计的流行病学数据分析.

主要成果:

大多数红疹病例 (87.6%) 发生在3月至6月期间,在5月达到顶峰.
大多数病例 (83.3%) 发生在10-29岁的人群中.
遗传学分析发现了四种红疹病毒系 (1E-L1,1E-L2,2B-L1,2B-L2c) 与中国其他省份的菌株具有很高的序列相似性.
一个菌株RVi/Tianjin.CHN/37.19/1,显示出强有力的证据,证明了多种分析方法的重组.
红疹病毒表现出高基因组保存,天津持续低发病率.

结论:

这项研究提供了关于天津红疹流行病学和基因型的第一个全面数据.
重组的证据表明正在进行的病毒突变潜力,需要持续的遗传监测.
持续的低发病率和基因组保护表明,在持续的监测和高疫苗接种覆盖率下,消除红疹是可行的.

关键词:

流行病学流行病学进化演化演化演化演化演化演化演化再组合的复合方式.红疹病毒是红疹病毒.传输传输传输传输传输传输整个基因组序列的测序.

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