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

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.