亚马逊地区的疟疾消除工作可能会受到Plasmodium vivax源-沉动态的影响:流行病学和人口基因组研究
Nathalia Rammé M de Albuquerque1,2, Rodrigo M Corder1,3, Igor C Johansen4
1Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
The Journal of infectious diseases
|September 3, 2025
概括
人类的流动性推动了巴西亚马逊地区的疟疾传播, 针对流动人口和高风险地区是消除疟疾的关键.
科学领域:
- 遗传学
- 流行病学
- 公共卫生
背景情况:
- 巴西消除疟疾的努力受到停滞的阻碍,2023年有超过163,000例病例,主要是Plasmodium vivax.
- 人类的移动性被假设是从疟疾热点传播寄生虫到流行率下降的地区.
研究的目的:
- 分析疟疾病例的流动性,并确定巴西亚马逊地区的Plasmodium vivax来源和下沉点.
- 使用全基因组测序来描述寄生虫基因流动和推断传播路径.
主要方法:
- 对2003年至2023年期间550万例疟疾病例的分析.
- 来自南美洲的408个Plasmodium vivax分离物的全基因组测序.
主要成果:
- 近三分之一的Plasmodium vivax感染是在患者居住的城市以外获得的.
- 像马纳乌斯和波尔图维尔霍这样的大城市充当了寄生虫的收容所,
- 在超过1000公里的距离上发现了基因连接的Plasmodium vivax寄生虫.
结论:
- 对于消除疟疾至关重要的是了解寄生虫的地理源流动性.
- 针对流动人口和高风险来源地区至关重要.
- 防止疟疾重新进入无疟疾地区需要在低传播率的城市进行战略干预.
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