2014年江门市区白纹伊蚊孳生情况调查分析

Investigation on breeding situation of Aedes albopictus in Jiangmen City in 2014

目的调查江门市登革热媒介白纹伊蚊幼虫孳生情况,为制定预防登革热的发生或流行策略提供科学依据。方法采用整群分层再随机抽样方法,运用蚊幼虫调查法对江门市区内(蓬江区、江海区)11个行政街道和3个乡镇开展白纹伊蚊孳生情况调查,以容器指数、房屋指数和布雷图指数的指标进行蚊媒密度监测,对资料进行描述性统计分析。结果共调查1 238户,其中白纹伊蚊孳生地阳性户数257户,布雷图指数为32.63,房屋指数为20.76,容器指数为35.31。各种容器类型中,盆景、水生植物和闲置容器(碗、瓶、缸、罐)等积水容器孳生幼虫的阳性率较高。结论江门市区具备传播登革热病暴发流行的条件,应加强登革热媒介监测,并经常开展以清除蚊虫孳生地为重点的爱国卫生运动,加强卫生督导检查和推广预防登革热的宣传教育,力求将布雷图指数控制在5以下。

Objective To investigate the breeding situation of Aedes albopictus in Jiangmen City, and provide a scientific evidence for mosquito control. Methods Data used in this study were collected from 11 blocks and 3 towns in the city of Jiangmen. The sampled households, chosen from the total houses using cluster stratified sampling and simple random sampling, were surveyed about the breeding situation of mosquito larvae. The container index, house index and Breteau index were analyzed. Results A total of 1 238 houses were inspected,and 257 houses were found to contain positive containers. The Breteau index, house index and container index respectively were 32. 63,20. 76 and 35.31. Mosquitoes preferred to breed in barrels ,plastic bowls ,jerricans and aquatic plants as compared to the others. Conclusion The outbreak risk of dengue fever is high in Jiangmen City. In order to control the situation, the integration of different methods should be taken into consideration.