福建省永安市一起登革热暴发疫情与控制

An outbreak and control of dengue fever in Yong’an City,Fujian Province

【目的】对福建省永安市燕西街道某城中村2019年发生的一起登革热本地暴发疫情进行调查,分析其特征,并对防控措施效果进行评价,总结经验。【方法】采用描述性分析方法对该起暴发疫情流行特征进行分析;用新发病例数和蚊媒密度变化评价防控措施的效果。【结果】经采取人工灭蚊、清除蚊虫孳生地、病例搜索、隔离治疗、开展健康教育等措施,疫点核心区的蚊媒密度逐渐降低,布雷图指数(BI)控制在登革热传播的阈值以下,成蚊密度保持在0只/(人·时)。最后病例经过最长潜伏期,未出现续发病例,疫情于11月28日平息。【结论】本起疫情为一起本地登革热暴发疫情。采取杀灭成蚊和清除蚊虫孳生地为主、病例隔离治疗为辅的综合性措施,有效控制疫情。

[Objective]To investigate a local outbreak of dengue fever in 2019 in a city village in Yong’an City,determine its characteristics,and evaluate the effect of countermeasures.[Methods]Epidemic characteristics of the outbreak were analyzed by descriptive analysis,and the effect of countermeasures was evaluated using the number of new cases and the change in mosquito vector density.[Results]The density of mosquito vectors in the core areas of the epidemic areas was gradually reduced by implementing multiple countermeasures. The Braitu index decreased below the threshold of dengue fever transmission. After the longest incubation period of the last case,there was no further case of dengue fever. The outbreak ended on 28 th November.[Conclusion]This is a local outbreak of dengue fever. Comprehensive measures should be implemented to control the epidemic by principally eliminating adult mosquitoes and clearing mosquito breeding grounds,be supplemented by isolation and treatment of cases.