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亚微观和微观无症状疟疾感染及其相关因素的动态:南贝宁的一个纵向研究

Rodeline Telfils¹, Akpéyédjé Yannelle Dossou², Armel Djènontin³

¹IRD, MERIT, Université Paris Cité, Paris, France.

|December 12, 2024

概括

无症状的疟疾感染形成了一个重要的储备,特别是在15岁以下的儿童中,在整个传播季节持续存在. 了解这些动态对于有效的疟疾控制战略至关重要.

科学领域:

疟疾学疟疾学
传染病流行病学流行病学
公共卫生公共卫生

背景情况:

无症状疟疾感染对疟疾控制工作构成重大威胁.
关于高季节性传播地区无症状疟疾的流行率和动态的数据有限.
为了解决这些知识差距,在贝宁南部进行了一项纵向研究.

研究的目的:

在高传播环境下调查无症状疟疾感染的动态.
确定影响无症状疟疾流行和持续性的因素.
为最佳部署疟疾控制干预措施提供信息.

主要方法:

招募了377名参与者的队列,并按年龄分层.
在两次访问中,使用显微镜和PCR诊断疟疾感染.
混合顺序多态回归和多态马尔科夫模型被用于分析感染动态和影响因素.

主要成果:

无症状感染占感染储备的大部分 (81.9%).
无症状疟疾的患病率在5-15岁和15岁以上的个体中明显高于5岁以下的个体.
患有无症状感染的15岁以下儿童患有症状的风险最高,在5-15岁年龄组观察到的感染持续时间最长.

结论:

一个持久的无症状疟疾储存存在,与年龄相关的显著变化.
研究结果强调了年龄作为疟疾感染动态的一个因素的重要性.
这些见解对于完善疟疾控制策略和干预措施至关重要.

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