云南德宏州2016年登革热传播媒介监测结果分析

Analysis of results of sentinel monitoring of trandmission vector of dengue fever at Dehong State of Yunnan Province in 2016

目的了解德宏州2016年登革热传播媒介埃及伊蚊和白纹伊蚊的分布、孳生环境及季节消长规律,为防制登革热提供科学依据。方法在监测点室内外检查积水容器的幼虫孳生情况,收集阳性容器内蚊幼带回实验室用显微镜鉴定,并进行统计分析。结果 2016年监测伊蚊415点次,检查居民20 960户,阳性837户,检查积水容器31 081个,阳性容器1 143个,平均布雷图指数(BI)5.45,BI≥20有38点次,5≤BI<20有56点次,白纹伊蚊在州内分布广泛,埃及伊蚊还局限于瑞丽坝区和盈江、陇川、芒市三县市边境口岸,废旧轮胎场所的BI指数显著高于其他场所。结论德宏州均有登革热传播媒介分布,广泛存在登革热流行危险因素,尤其是埃及伊蚊分布区流行风险最大,要长期做好登革热防控工作。

Objective To investigate the distribution,breeding environment and seasonal of Aedes aegypti and Aedes albopictus in Dehong,and to provide scientific basis for controlling dengue fever. Methods The larvae of the water container were examined at room temperature inside and outside the monitoring points,and the mosquitoes were collected from the positive containers. The laboratory was identified by microscopy and analyzed statistically. Results In 2016,415 times Aedes mosquito were monitored,20 960 residents was checked,837 were positive,31 081 water container were checked,1 143 containers were positive. Average Brett index（BI） was 5. 45,BI ≥20 has 38 points,5≤BI〈 20 has 56 times. Aedes albopictus is widely distributed in the state,Aedes aegypti is also confined to Ruili dam and Yingjiang,Longchuan,Mangshi three counties border,waste tire sites of the BI index was significantly higher than other places. Conclusion There are dendritic vectors in Dehong,and there are widespread risk factors of dengue fever. In particular,the epidemic risk of Aedes aegypti is the largest,and the dengue prevention and control work is done for a long time.