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目的了解深圳市坪山新区登革热传播媒介白纹伊蚊密度及二代成蚊携带登革热病毒情况,为登革热的防控提供科学的预警信息。方法 2016年4-8月对坪山新区不同生境的白纹伊蚊密度进行监测,白纹伊蚊专项监测采用诱蚊诱卵器法,蚊幼虫密度监测采用布雷图指数(BI)法,将采集的蚊幼虫和蚊卵饲养至成蚊,提取其核酸,利用实时荧光RT-PCR检测登革热病毒。结果 2016年4-8月白纹伊蚊平均诱蚊诱卵指数(MOI)为6.19;公园MOI(7.91)和BI(10.68)最高;8月MOI(10.28)和BI(15.42)最高;共检测白纹伊蚊1 190只,未检出登革热病毒。结论深圳市坪山新区白纹伊蚊未检出登革热病毒,但该蚊广泛分布且密度高,存在因登革热输入性病例引发本地疫情暴发的风险,应加强监测与防控。
Objective To understand the densities of Aedes albopictus and the second generation adult mosquito carrying dengue virus in Pingshan New District, Shenzhen to provide scientific early warning information for the prevention and control of dengue fever. Methods The density of Aedes albopictus in different habitats in Pingshan New Area was monitored from April to August in 2016. The mosquito-specific method was used to monitor Aedes albopictus. The mosquito larva density was monitored by Brett Index (BI) Mosquito larvae and mosquito eggs to adult mosquitoes, extracting their nucleic acids, and detecting dengue virus by real-time fluorescent RT-PCR. Results The average MOI of Aedes albopictus from January to August in 2016 was 6.19. The MOI (7.91) and BI (10.68) in the park were the highest. The MOI (10.28) and BI (15.42) 1 190 Aedes albopictus, no dengue virus was detected. Conclusion Dengue virus was not detected in Aedes albopictus in Pingshan New District, Shenzhen. However, the mosquito was widely distributed and highly densified. There was a risk of outbreak of local outbreak caused by imported dengue virus, so monitoring and prevention should be strengthened.