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目的 1999年夏秋季福州郊区发生登革热暴发流行 ,调查本次暴发流行的传播媒介及其生态习性 ,为控制登革热流行提供理论依据。方法 调查流行区媒介伊蚊种类 ,以免疫萤光法检测成蚊病毒自然感染率并判定传播媒介 ;以房屋指数、容器指数和布雷图指数调查幼虫密度 ,以人饵诱捕法人工小时调查成蚊刺叮率 ;调查主要流行村蚊虫孳生环境 ,了解媒介伊蚊孳生现状。结果 白纹伊蚊是当地的优势蚊种 ,埃及伊蚊末捕及 ,成蚊登革病毒 2型自然感染率为 2 3.0 7% ,8个主要流行村白纹伊蚊密度指数平均房屋指数为 5 6 .5 ,容器指数 5 4.5 ,布雷图指数 175 .5 ,刺叮率为 42 .3只。白纹伊蚊的孳生环境类型有 19种 ,主要为闲置的缸、罐类 ,桶类和旧轮胎等各种容器型积水 ,分别占全部阳性积水容器的 2 9.42 % ,17.0 7%和 15 .33%。结论 白纹伊蚊是本次登革热暴发流行的传播媒介 ,当地白纹伊蚊种群密度较高 ,缸、罐类和桶类、旧轮胎等积水容器是白纹伊蚊的主要孳生环境
Objective To investigate the prevalence of dengue outbreak in the suburbs of Fuzhou in summer and autumn in 1999 and investigate the prevalence media and its ecological habits in order to provide a theoretical basis for controlling the epidemic of dengue fever. Methods The species of Aedes albopictus in epidemic area were investigated. The natural infection rate of adult mosquito virus was detected by immunofluorescence method and the vector was determined. The larval density was investigated by housing index, container index and Brett index. Adult mosquito was surveyed by artificial bait method Sting rate; survey the prevalence of mosquito breeding endemic village environment, understand the status of Aedes mosquito breeding. Results Aedes albopictus was the dominant species of mosquito in the area. The natural infection rate of Aedes albopictus type 2 in Egypt was 23.07%. The average housing index of Aedes albopictus density in 8 major endemic areas was 56.5, container index 4.55, Brett index 175.5, sting rate 42.3. There are 19 types of Aedes albopictus breeding environment, mainly for various types of container water such as unused tanks, cans, barrels and used tires, accounting for 2 9.42%, 17.0 7% and 15.33%. Conclusion Aedes albopictus is the epidemic media of dengue outbreak. The density of local Aedes albopictus population is high. The main breeding ground for Aedes albopictus is water container such as tank, tank, barrel and old tire