PDF(Pubmed)
Abstract：
BACKGROUND: Children in Kenya spend a substantial amount of time at school, including at dawn and dusk when mosquitoes are active. With changing vector behaviour towards early morning biting, it is important to determine whether there is an additional risk of transmission in schools. This study sought to understand whether late morning biting by Anopheles funestus, previously documented in households in western Kenya, was replicated in schools.
METHODS: From the 4th to the 6th of August 2023, human landing collections were conducted hourly in four schools in Alego Usonga sub-County, Siaya County. The collections were conducted in and outside five classrooms in each school and ran for 17 h, starting at 18:00 until 11:00 h the next morning.
RESULTS: Anopheles funestus was the predominant species collected, forming 93.2% (N = 727) of the entire collection, with peak landing between 06:00 and 07:00 h and continuing until 11:00 h. More than half of the collected An. funestus were either fed or gravid, potentially indicative of multiple bloodmeals within each gonotrophic cycle, and had a sporozoite rate of 2.05%.
CONCLUSIONS: School children spend up to 10 h of their daytime in schools, reporting between 06:00 and 07:00 h and staying in school until as late as 17:00 h, meaning that they receive potentially infectious mosquito bites during the morning hours in these settings. There is a need to consider vector control approaches targeting schools and other peridomestic spaces in the morning hours when An. funestus is active.
METHODS: From the 4th to the 6th of August 2023, human landing collections were conducted hourly in four schools in Alego Usonga sub-County, Siaya County. The collections were conducted in and outside five classrooms in each school and ran for 17 h, starting at 18:00 until 11:00 h the next morning.
RESULTS: Anopheles funestus was the predominant species collected, forming 93.2% (N = 727) of the entire collection, with peak landing between 06:00 and 07:00 h and continuing until 11:00 h. More than half of the collected An. funestus were either fed or gravid, potentially indicative of multiple bloodmeals within each gonotrophic cycle, and had a sporozoite rate of 2.05%.
CONCLUSIONS: School children spend up to 10 h of their daytime in schools, reporting between 06:00 and 07:00 h and staying in school until as late as 17:00 h, meaning that they receive potentially infectious mosquito bites during the morning hours in these settings. There is a need to consider vector control approaches targeting schools and other peridomestic spaces in the morning hours when An. funestus is active.
摘要：
背景：肯尼亚的儿童在学校花费大量时间，包括在蚊子活跃的黎明和黄昏。随着矢量行为向清晨咬的变化，重要的是要确定学校是否有额外的传播风险。这项研究试图了解清晨是否被按蚊咬伤，以前记录在肯尼亚西部的家庭中，在学校复制。
方法：从2023年8月4日至6日，每小时在阿雷戈·乌松加县的四所学校进行人类登陆收集，西亚亚县。收集是在每个学校的五个教室内外进行的，运行了17小时，从18:00开始直到第二天早上11:00。
结果：按蚊是收集到的主要物种，形成整个集合的93.2％（N=727），高峰在06:00至07:00h之间着陆，并持续到11:00h。超过一半的收集An。Funestus被喂食或妊娠，可能表明在每个促性腺激素周期内存在多种血食，子孢子率为2.05%。
结论：学童白天在学校度过长达10小时，在06:00至07:00之间报到，并在学校呆到最晚的17:00小时，这意味着他们在这些环境中的早晨受到潜在的传染性蚊子叮咬。有必要在上午的几个小时考虑针对学校和其他周边空间的媒介控制方法。funestus很活跃。
方法：从2023年8月4日至6日，每小时在阿雷戈·乌松加县的四所学校进行人类登陆收集，西亚亚县。收集是在每个学校的五个教室内外进行的，运行了17小时，从18:00开始直到第二天早上11:00。
结果：按蚊是收集到的主要物种，形成整个集合的93.2％（N=727），高峰在06:00至07:00h之间着陆，并持续到11:00h。超过一半的收集An。Funestus被喂食或妊娠，可能表明在每个促性腺激素周期内存在多种血食，子孢子率为2.05%。
结论：学童白天在学校度过长达10小时，在06:00至07:00之间报到，并在学校呆到最晚的17:00小时，这意味着他们在这些环境中的早晨受到潜在的传染性蚊子叮咬。有必要在上午的几个小时考虑针对学校和其他周边空间的媒介控制方法。funestus很活跃。
