武义县2015—2017年登革热媒介监测结果分析

Analysis on monitoring results of dengue vector from 2015 to 2017 in Wuyi county

目的分析武义县2015—2017年登革热媒介监测结果,掌握登革热媒介伊蚊密度、分布及季节变化,为登革热风险评估、预测预警、控制规划提供科学依据。方法 2015—2017年对武义县监测点开展登革热媒介监测,分析白纹伊蚊幼虫密度。结果 2015—2017年平均布雷图指数(BI)依次为20.80、16.27、23.81,其中2017年最高;BI平均值最高值在6月(28.10),容器指数(CI)平均值高峰出现在6月(20.89%),房屋指数(HI)平均值最高值在9月(18.98%),4—11月BI平均值均在5以上;各种容器类型中,CI最高的为竹头、树洞、石穴和废旧轮胎,CI分别为35.85%和27.11%,闲置容器是最主要滋生地,占全部滋生地的53.52%。结论武义县白纹伊蚊幼虫密度较高,一旦有登革热病例输入,存在发生暴发和流行的可能,应加强监测和健康宣教,采取有效措施预防登革热的传播和流行。

Objective To analyze the dengue surveillance data of Wuyi from 2015 to 2017 to grasp the density,distribution and seasonal variation of the dengue vector aedes,provide the scientific basis for the prevention,early warning and formulate prevention and control strategies of dengue epidemic.Methods Dengue vector surveillance was conducted at the monitoring sites to analyze the larval density of aedes albopictus from 2015 to 2017.Results The average BI from 2015 to 2017 were 20.80,16.27 and 23.81 respectively.The highest average BI was in 2017.The peak BI(28.10)appeared in June.The peak CI(20.89%)appeared in June.The peak HI(18.98%)appeared in September.The average BI was all above 5 from April to November.Major positive water hazard were made up of bamboo head,tree hole,stone hole and junked tire with the higher CI of 35.85%and 27.11%respectively.The mainly breeding container was unused container with the highest of 53.52%.Conclusions Aedes albopictus population density is generally high in Wuyi county.Once dengue cases are imported,there is the possibility of outbreaks and epidemics.The surveillance system and public health education should be strengthened.It is necessary to take effective prevention and control measures to prevent the spread of dengue fever.