The Efficacy of Long Lasting Insecticidal Nets (LLINs) and Insecticide Treated Nets against Anopheles Mosquitoes

疾病监测与控制 Pub Date : 2019-01-01 DOI:10.18488/journal.99.2019.62.34.53

A. Thandar, P. W. Win, S. Htwe, M. Mya

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Abstract

Field bio-efficacy of 0, 5, 10, 15 and 20 times washed PermaNet 2.0, Icon LLIN, Deltamethrin and Icon treated cotton and Nylon nets (ITN) against wild caught Anopheles mosquitoes were tested with WHO cone test Kit method in Myaebinthar village Myothit Township, Magwe Region. Mosquitoes were exposed in cones for 5min and 15min fixed exposure period under room temperature in raining and cold season. Knockdown effect was measured after 60 min of exposure. In raining and cold season, a total of 221 and 196 mosquitoes, consist of 8 and 6 species of Anopheles adults were collected. Maximum number of An. culicifacies was caught followed by An vagus in cattle bate k net, human bait and lowest was collected in morning resting collection. In both season maximum number of main vector An. minimus was caught on human and cattle bait collection between 21:00 and 24:00hours. The bio efficacy of 0 and 5 washed all PermaNet 2.0, Icon and deltamethrin LLINs and ITNs found 100% knockdown ability with all caught mosquitoes. An.minimus and An.culicifacies found to be 80-100% knockdown effect against 10washes with PermaNet 2.0 and Icon LLINs in both season. Knockdown efficacy was significantly declined between 5 and 20washes,100-60% knockdown on LLINs and 90-20% for Deltamethrin and Icon treated nets in both season. PermaNet 2.0,

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长效杀虫蚊帐与经杀虫剂处理过的蚊帐对按蚊的效果比较

在马古地区Myothit乡Myaebinthar村，采用世卫组织球型试验试剂盒(WHO cone test Kit)方法，检测了0、5、10、15和20次水洗PermaNet 2.0、Icon LLIN、溴氰菊酯和Icon处理棉尼龙网(ITN)对野生按蚊的现场生物药效。在雨季和寒季，在室温条件下，分别进行5min和15min固定暴露。暴露60min后测定击倒效应。雨季和寒季分别捕获成蚊221只和196只，其中按蚊8种和6种;An的最大数目。先用牛网捕鼠，再用人饵捕鼠，晨静捕鼠。在这两个季节中，主要病媒蚊数量最多。在21:00至24:00期间，在收集人饵和牛饵时捕获了Minimus。生物药效0和5洗涤后，对所有捕获的蚊虫均有100%的杀灭能力。一个。最小值和An。在两个季节，使用PermaNet 2.0和Icon LLINs进行10次洗涤，culicifacies的击倒效果为80-100%。水洗5 -20次，低氯氰胺的去除效果显著下降，溴氰菊酯和Icon处理的蚊帐去除效果分别为100-60%和90-20%。2.0申请人,

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疾病监测与控制

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