雷州市一起登革热暴发疫情的分析

目的分析雷州市2007年一起登革热暴发疫情的流行病学特征,为制定登革热预防控制措施提供科学依据。方法按登革热诊断标准进行病例诊断、开展流行病学调查,用布雷图指数(BⅠ)法调查蚊媒密度。结果疫情流行历时38d,共发病187例,男性90例,女性97例,发病年龄最小6岁,最大79岁,以30～60岁发病者居多。主要传播媒介是埃及伊蚊,疫情发生时布雷图指数67.0,经采取以快速杀灭成蚊、清除伊蚊孳生地和对供水点投药杀灭蚊幼等综合防治措施后,布雷图指数降到5左右,疫情得到控制。结论本次疫情是由I型登革病毒引起,加强登革热病人管理和控制布雷图指数<5,是控制疫情的有效措施。

Epidemiological analysis of an outbreak of dengue fever in Leizhou City

Objective To analyze the epidemic characteristics of the outbreak of dengue fever in Wushi City in 2007 and provide a scientific basis for making prevention and control measures.Methods Retrospective epidemiological investigation was conducted.The density of mosquito larvae at epidemic spot was measured with Breteau Index(BI).Results The epidemic period caused by type I dengue virus lasted 38 days.There were 187 patients inclduing 90 males and 97 females.And the age was between 6 to 79 years.The Breteau Index in epidemic district was 67.0 during the epidemic period.Conclusion The outbreak was caused by dengue virus type I.Management of patients and Breteau Index down to 5 are the effective measures for control and prevention of dengue fever.