非标准洗涤对长效蚊帐使用效果的影响研究

发布时间：2018-10-10 11:16

【摘要】：目的：探讨非标准洗涤方法对长效蚊帐(PermaNet(?)2.0)在云南省使用效果的影响,为进一步推广长效蚊帐的应用提供科学依据。方法：在全球基金疟疾项目免费发放长效蚊帐(PermaNet(?)2.0)的覆盖地区选择蚊帐覆盖率高和使用率高的居民区,采用逐户调查,收集洗涤次数符合的长效蚊帐,将收集的蚊帐剪取适量大小的样本,采用WHO标准圆柱测试筒进行生物活性测定,观察60min时击倒数,24h时死亡数,计算24h死亡率、60min击倒率及半数击倒时间。结果：微小按蚊接触没有清洗的PermaNet(?)2.0长效蚊帐后的24小时死亡率为100%,60分钟平均击倒率为100%,洗涤5次后死亡率下降到90%,洗涤10次后死亡率下降到89%、15次时后死亡率下降到90%和20次后死亡率下降到85%；洗涤5、10、15、20次的蚊帐,微小按蚊的60分钟平均击倒率分别为94%、96%、98%和93%。洗涤5、10、15、20次后,长效蚊帐对微小按蚊的半数击倒时间分别为33.79、33.91、34.30和37.25分钟。调查发现,82份样品中的78份(95.12%)清洗后直接在太阳下晒干,其余4份(4.88%)既有太阳下晒干,也有阴干。在收集到的82份样品中,出现破损的有37份(45.12%) 结论：本次研究发现云南疟区高危人群使用的长效蚊帐PermaNet(?)2.0的杀虫效果受当地居民洗涤因素的影响。根据本次研究的结果提示,随着清洗次数的增加,长效蚊帐的杀虫效果有下降的趋势。从现场收集的PermaNet(?)2.0长效蚊帐符合WHO对长效蚊帐产品质量标准的要求。
[Abstract]:Objective: to study the effect of non-standard washing method on (PermaNet (? 2.0) the effect of use in Yunnan Province provides scientific basis for the further application of long-acting mosquito nets. Methods: (PermaNet (? (2.0) selected residential areas with high coverage and high utilization of mosquito nets, using house-to-house surveys, collecting long-lasting nets with consistent washing frequency, and cutting samples of appropriate size from the collected nets, The biological activity of WHO standard cylindrical test tube was measured, and the number of deaths in 24 hours after 60min was observed. The death rate of 24 hours and the half time of knock down were calculated. Results: Anopheles minimus was exposed to PermaNet (?) 2.0 the 24 hour mortality of long acting mosquito nets was 100 min, the average knock down rate of 60 minutes was 100, the mortality rate after washing 5 times decreased to 90, the death rate after 10 times of washing decreased to 89% 15 times and the death rate after 20 times decreased to 85%. The average knock down rate of Anopheles minimus in 60 minutes was 94 996% and 933% respectively. After washing for 20 times, the half-hit time of long-acting mosquito net to Anopheles minimus was 33.79m 33.91g 34.30 min and 37.25 min respectively. It was found that 78 (95.12%) of 82 samples were washed and dried directly in the sun, while the remaining 4 (4.88%) were dried in both sun and shade. Of the 82 samples collected, 37 (45.12%) were damaged (45.12%). Conclusion: this study found PermaNet (?) The insecticidal effect of 2.0 was affected by the washing factor of local residents. According to the results of this study, with the increase of cleaning times, the insecticidal effect of long-lasting mosquito nets decreased. PermaNet (?) collected from the site 2. 0 long-acting mosquito nets meet the requirements of WHO product quality standards for long-acting nets.
【学位授予单位】：大理学院
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：R184.31

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