House design modifications reduce indoor resting malaria vector densities in rice irrigation scheme area in western Kenya
House design modifications reduce indoor resting malaria vector densities in rice irrigation scheme area in western Kenya
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DOI：
10.1186/1475-2875-8-108
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发表时间：
2009-05-19
期刊：
影响因子：
3
通讯作者：
Scott, Thomas
中科院分区：
文献类型：
--
作者：
Atieli, Harrysone;Menya, Diana;Scott, Thomas
背景资料：对典型的农村房屋设计进行简单的修改，可以成为减少室内蚊媒密度从而减少疟疾传播的有效和相对廉价的方法。公共卫生科学家已经展示了房屋设计在保护人们免受疟疾侵害方面的潜力，但这种类型的干预措施实际上仍然被忽视。一个随机对照研究，因此，进行了确定这种方法的影响，室内休息疟疾病媒的密度在水稻灌溉计划在肯尼亚西部的低地地区。方法：10个处理房屋进行了修改与天花板的纸莎草席子和经杀虫剂处理的网（ITN）和测试对10个控制房屋没有纸莎草天花板。为了确定家中休息的蚊子的密度，使用除虫菊喷雾法同时收集干预和控制房屋中的室内休息疟疾媒介。在四个月的时间里，对每个房屋总共进行了八次采样，每次处理总共进行了80次采样。社区对这种干预的反应进行了调查，通过与residents.Results的讨论：纸草席天花板修改减少了冈比亚按蚊S.L和按蚊funestus密度的房屋进入78-80%和86%之间，分别为未经修改的房屋。冈比亚按蚊的几何平均密度。与对照组相比，改造后的房内蚊媒和不死按蚊感染率显著降低（t（18）= 7.174，P < 0.0001和t（18）= 2.52，P = 0.02）。未经改造的房屋与疟疾病媒密度相对较高有关。冈比亚按蚊s.l.的几率分别降低84%（OR 0.16，95% CI 0.07-0.39，P < 0.0001）和87%（OR 0.13，95% CI 0.03-0.5，P = 0.0004）。和按蚊funestus的存在，分别在改造的房屋相比，未改造的房屋。居民积极响应这种模式的vector control.Conclusion：房子的修改，涉及昆虫屏幕天花板从当地可用的材料和小驱虫蚊帐纳入房屋建设有可能减少人类接触疟疾病媒，从而寄生虫感染，在水稻灌溉计划区肯尼亚西部。修改最高限额可能是可以接受的，预计在与其他疟疾控制战略结合使用时将产生最大效益。
Background: Simple modifications of typical rural house design can be an effective and relatively inexpensive method of reducing indoor mosquito vector densities and consequently decreasing malaria transmission. Public health scientists have shown the potential for house design to protect people against malaria, yet this type of intervention remains virtually ignored. A randomized-controlled study was, therefore, undertaken to determine the effects of this method of vector control on the density of indoor resting malaria vectors in a rice irrigation scheme area in lowlands of western Kenya.Methods: Ten treatment houses were modified with ceilings of papyrus mats and insecticide-treated netting (ITN) and tested against ten control houses without papyrus ceilings. To determine densities of mosquitoes resting in homes, the pyrethrum spray method was used to simultaneously collect indoor resting malaria vectors in intervention and control houses. Each house was sampled a total of eight times over a period of four months, resulting in a total of 80 sampling efforts for each treatment. Community response to such intervention was investigated by discussions with residents.Results: Papyrus mats ceiling modification reduced house entry by Anopheles gambiae s.l and Anopheles funestus densities by between 78-80% and 86% respectively compared to unmodified houses. Geometric mean density of Anopheles gambiae s.l. and Anopheles funestus in modified houses were significantly lower (t(18) = 7.174, P < 0.0001 and t(18) = 2.52, P = 0.02, respectively) compared to controls. Unmodified houses were associated with relatively higher densities of malaria vectors. There was a 84% (OR 0.16, 95% CI 0.07-0.39, P < 0.0001) and 87% (OR 0.13, 95% CI 0.03-0.5, P = 0.0004) reduction in the odds of Anopheles gambiae s.l. and Anopheles funestus presence in modified houses, respectively, compared with unmodified houses. Residents responded favourably to this mode of vector control.Conclusion: House modifications involving insect screen ceilings made from locally available materials and small ITN incorporated in house construction have the potential to reduce human exposure to malaria vectors, and thus parasite infection, in a rice irrigation scheme area of western Kenya. Ceiling modification is likely to be acceptable and is expected to be of greatest benefit when used in combination with other malaria control strategies.