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目的掌握惠州市登革热媒介动态变化,预防登革热流行,为其防制提供科学依据。方法在惠州市的三县四区40个街道办设立登革热媒介监测点,每月监测伊蚊幼虫和成蚊密度,计算布雷图指数(BI)和诱蚊诱卵器指数(MOI)。结果 2015年惠州市输入性登革热病例2例;3—11月全市共布监测点346个,伊蚊BI为2.31~7.02,中位数为4.36,伊蚊MOI为2.98~7.21,中位数为5.17,捕获蚊种均为白纹伊蚊。伊蚊密度高峰出现在5月、6月和9月,各滋生地环境中CI最高是废旧轮胎(9.81%);高传播风险点主要集中在惠城区和仲恺区。结论惠州市人口流动频繁,有登革热媒介白纹伊蚊分布且存在高传播风险点,有登革热流行隐患,应加强监测等综合性措施。
Objective To grasp the dynamic changes of dengue in Huizhou and prevent the epidemic of dengue and provide a scientific basis for its prevention and control. Methods Dengue media was set up in 40 streets in 40 counties, 40 counties and 40 counties in Huizhou City. The density of mosquito larvae and adult mosquitoes was monitored monthly, and the Brett Index (BI) and the mosquito-induced ovum index (MOI) were calculated. Results Two cases of imported dengue fever were detected in Huizhou City in 2015. Three to six surveillance sites were distributed in the city from March to November. The Aedes mosquito BI ranged from 2.31 to 7.02 with a median of 4.36. The MOI of Aedes mosquito was 2.98 to 7.21 with a median of 5.17 , Captured mosquito species are Aedes albopictus. The highest density of Aedes mosquitoes appeared in May, June and September, and the highest CI of all breeding places was waste tire (9.81%). The high risk of transmission was mainly concentrated in HuiCheng and Zhongkai districts. Conclusion There are frequent population movements in Huizhou City. There are distribution of dengue vector Aedes albopictus and there are high risk of transmission, there are hidden dangers of dengue epidemic, comprehensive measures such as monitoring should be strengthened.