湖北省郧县2010年登革热蚊媒监测结果分析

Analysis on mosquito vectors surveillance results of dengue fever in Yun county of Hubei province in 2010

目的了解湖北省郧县登革热媒介白纹伊蚊幼虫和成蚊季节性消长规律,为登革热的防控提供科学依据。方法每月下旬对监测点进行现场调查,监测白纹伊蚊的幼虫指数(BI、CI、HI)和成蚊密度。结果最早监测到白纹伊蚊幼虫为4月,最晚为11月,4～6月幼虫指数逐月长升,6月最高(BI=84、CI=56、HI=50),后逐月下降。5～11月监测到白纹伊蚊成蚊,5～8月成蚊密度逐月上升,8月最高(20只/人工.h),后逐月下降。结论郧县白纹伊蚊幼虫和成蚊密度消长季节性明显,且5～9月幼虫指数较高,输入性登革热病例引起疫情暴发的风险较大,应加强环境整治和疾病监测。

Objective To understand the seasonal growth regularity of Aedes albopictus larvae and adult in Yun county,Hubei province,and provide scientific basis for control it.Method The larval indexs（BI、CI、HI） and adult densities of Aedes albopictus were surveillance at the last third of every month by field survey.Results The larvaes of Aedes albopictus were found in April at the earliest and latest in November,the larvae indexs ascended from April to June and reached to the peak in June（BI=84,CI=56,HI=50）,and then descended month by month.The adults of Aedes albopictus were found from May to November,the density ascended from May to August,and reached to the peak in August（20 per person hour）,and then descended month by month.Conclusions The seasonal growth regularity of the larvae and adult of Aedes albopictus were obviously,the larvae indexs were higher during May to September,the risk of dengue fever outbreak caused by imported infection was higher,therefore we should enhance environmental punish and disease surveillance.