关键词: 登革热, 白纹伊蚊, 布雷图指数, 容器指数, 房屋指数, 孳生地

Abstract: Objective To analyze the monitoring data on the dengue vector Aedes albopictus and find out the breeding environment of Aedes mesquito in Shanxi Province, China, so as to provide a scientific basis for the risk assessment, prediction and early warning, and prevention and control of dengue fever. Methods Ecological data of dengue vector Ae. albopictus were collected from five surveillance sites in Shanxi Province from June to September of 2015 to 2021. The Breteau index (BI), container index (CI), and house index (HI) were used for analysis. Chi-square test and analysis of variance were used to compare mosquito seasonality, the type of standing water, and mosquito breeding site at the five surveillance sites in different years. Results For Ae. albopictus in Shanxi Province from 2015 to 2021, the total BI was 4.48, CI was 3.30, and HI was 4.24. There was no significant difference in the BI values of different years (F=0.613, P=0.719). There were significant differences in CI (χ²=21.218, P=0.002) and HI (χ²=72.243, P<0.001) among different years. Among stagnant water types, the number of unused containers (bowls, bottles, tanks, and jars) was the largest, accounting for 41.18%. By monitored habitat, the mean annual BI of waste tires was highest (13.37), and by breeding site, the positive rate of tires/waste tires was highest (5.64%). The density of Ae. albopictus mainly peaked in July to August, with the highest BI being 15.35 in Yaodu District in August. Conclusion It is necessary to strengthen the management of waste tires and water containers, especially in July and August, and knowledge popularization about mosquito prevention and control, so as to prevent the local transmission of dengue fever.

Key words: Dengue fever, Aedes albopictus, Breteau index, Container index, House index, Breeding site