Hertz Julian T, Lyaruu Lucille J, Ooi Eng Eong, Mosha Franklin W, Crump John A
a Department of Medicine, Division of Infectious Diseases and International Health , Duke University Medical Center , Durham , NC , USA.
b Tropical Pesticides Research Institute , Arusha , Tanzania.
Pathog Glob Health. 2016 May;110(3):108-12. doi: 10.1080/20477724.2016.1182719.
Little is known about the presence and distribution of Aedes mosquitoes in northern Tanzania despite the occurence of viruses transmitted by these mosquitoes such as Chikungunya virus (CHIKV) and Dengue virus (DENV) in the region. Adult and larval mosquitoes were collected from rural and urban settings across a wide range of altitudes in the Kilimanjaro Region using the Mosquito Magnet CO2 Trap for collection of adults and old tires for breeding of larvae. Polymerase chain reaction assays were performed on captured adult mosquitoes to detect the presence of CHIKV and DENV. A total of 2609 Aedes aegypti adult mosquitoes were collected; no other Aedes species larvae were found. Mosquito yields were significantly higher in urban settings than rural settings (26.5 vs. 1.9 mosquitoes per day, p = 0.037). A total of 6570 Ae. aegypti larvae were collected from old tires; no other Aedes species larvae were found. Of the 2609 adult mosquitoes collected, none tested positive for CHIKV or DENV. As far as we are aware, this paper reports for the first time the presence of Ae. aegypti in the Kilimanjaro Region of northern Tanzania. Although CHIKV and DENV were not isolated from any of the collected mosquitoes in this study, the apparent absence of other Aedes species in the area suggests that Ae. aegypti is the primary local vector of these infections.
尽管坦桑尼亚北部地区存在由伊蚊传播的病毒，如基孔肯雅病毒（CHIKV）和登革病毒（DENV），但人们对该地区伊蚊的存在和分布情况知之甚少。在乞力马扎罗地区，我们使用诱蚊灯二氧化碳诱捕器收集成蚊，并用旧轮胎培育幼虫，从不同海拔的农村和城市环境中采集了成蚊和幼虫。对捕获的成蚊进行聚合酶链反应检测，以检测CHIKV和DENV的存在。共收集到2609只埃及伊蚊成蚊；未发现其他伊蚊种类的幼虫。城市环境中的蚊虫捕获量显著高于农村环境（分别为每天26.5只和1.9只，p = 0.037）。从旧轮胎中总共收集到6570只埃及伊蚊幼虫；未发现其他伊蚊种类的幼虫。在收集到的2609只成蚊中，没有一只对CHIKV或DENV检测呈阳性。据我们所知，本文首次报道了坦桑尼亚北部乞力马扎罗地区存在埃及伊蚊。尽管在本研究中未从任何收集到的蚊子中分离出CHIKV和DENV，但该地区明显没有其他伊蚊种类，这表明埃及伊蚊是这些感染的主要本地传播媒介。
