Investigation and analysis of vector control effect in Qinhuangdao in 2023

YE Zhuo; WEI Dongzhou; WANG Zhigang; LI Bing

doi:10.19821/j.1671-2781.2025.04.010

Abstract：Objective To investigate the control effect of vectors in Qinhuangdao,so as to provide a scientific basis for consolidating the national hygienic city.Methods The density surveys of mosquitoes,flies,rodents,and cockroaches in the five directions(east,west,south,north,and center)of the built-up area in Qinhuangdao were conducted.The route method and dip-catch method were used for mosquito larvae.The human-baited landing method was used for adult mosquitoes.The trace method was used for rodents.The visual observation method was used for flies and cockroaches.Results The outdoor mosquito landing index,the mosquito route index and dip index were 0.60 individuals/person,0.56 places/km and 2.00%,respectively.The positive rate of outdoor fly breeding site was 3.33%,the percent of the rooms that were aggrieved by flies was 3.84%,the fly density of room was 1.79 flies per room,and the pass rate of fly proof facilities was 96.28%.The outdoor rodent route index,the positive rate of rodent traces indoor and pass rate of rodent proof facilities in key units were 1.20 places/km,2.15%and 95.87%,respectively.The infestation rate of adult and nymph cockroaches,the rate of cockroach trace and the rate of egg were 2.03%,2.08%and 0.43%,respectively.All the cockroaches were Blattella germanica.Conclusion In 2023,the density control levels of mosquitoes and flies in the built-up area of Qinhuangdao were level C,and the density control levels of rodents and cockroaches were level B,indicating that the consolidation of vector control in Qinhuangdao as a national hygienic city is relatively good.Comprehensive prevention and control measures should be taken,with environmental management as the basis,targeted vector control work,and scientific and reasonable use of insecticides.