埃塞俄比亚疟疾流行地区主要和次要疟疾传播媒介中疟原虫感染率升高。

Elevated Sporozoite Infection Rates in Primary and Secondary Malaria Vectors in -Infested Areas of Ethiopia.

作者信息

Hawaria Dawit, Amanuel Timotwos, Anbesie Abraham, Zhong Daibin, Kibret Solomon, Lee Ming-Chieh, Zhou Guofa, Wang Chloe, Chen Jiale, Matewos Tafesse, Ejeso Amanuel, Ayele Chirotaw, Yosef Temesgen, Yewhalaw Delenesaw, Yan Guiyun

机构信息

School of Public Health, Hawassa University, Hawassa P.O. Box 05, Ethiopia.

School of Public Health, Wolaita Sodo University, Sodo P.O. Box 138, Ethiopia.

出版信息

Insects. 2025 Apr 27;16(5):462. doi: 10.3390/insects16050462.

DOI:10.3390/insects16050462

PMID:40429175

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12112001/

Abstract

Assessing bloodmeal sources and sporozoite infection rates in mosquito vectors is essential for understanding their role in malaria transmission. This study investigated these factors in Hawassa, Southern Ethiopia-an area recently invaded by -through adult mosquito collections conducted between January and April 2023 using BG-Pro traps, CDC Light Traps, and Prokopack Aspirators. A total of 738 female mosquitoes were collected, including (72.9%), (13.4%), (7.5%), and (6.2%). Human Blood Index (HBI) values were 23.3% for , 43.8% for , 8.3% for , and 25.0% for . infection was detected in 8% of and 4.7% of , while and were uninfected. The findings highlight the presence of multiple competent malaria vectors, with significant infection rates observed in both primary and secondary species, underscoring the need to include secondary vectors in control and surveillance programs. The detection of alongside native vectors adds complexity to malaria control efforts, reinforcing the importance of continuous monitoring to understand the changing dynamics of vector populations and their roles in transmission.

摘要

评估蚊媒的血餐来源和子孢子感染率对于了解它们在疟疾传播中的作用至关重要。本研究于2023年1月至4月期间在埃塞俄比亚南部的哈瓦萨开展，该地区最近受到入侵，通过使用BG-Pro诱捕器、疾控中心灯光诱捕器和Prokopack吸气器收集成年蚊子，调查了这些因素。共收集到738只雌蚊，包括（72.9%）、（13.4%）、（7.5%）和（6.2%）。的人类血指数（HBI）值为23.3%，为43.8%，为8.3%，为25.0%。在8%的和4.7%的中检测到感染，而和未感染。研究结果凸显了多种具备传播疟疾能力的蚊媒的存在，在主要和次要物种中均观察到显著的感染率，强调了在控制和监测项目中纳入次要蚊媒的必要性。与本地蚊媒一同被检测到增加了疟疾控制工作的复杂性，强化了持续监测以了解蚊媒种群动态变化及其在传播中作用的重要性。