云南省2006年登革热监测分析

Results in monitoring of dengue fever in Yunnan in 2006

目的了解云南省登革热的疫情动态、人群抗体水平、媒介伊蚊种群（包括成幼虫孳生和密度变化）的动态变化、为登革热流行趋势的预测、预警和制定防治对策、措施提供科学依据。方法各级医疗、卫生、检疫机构的医务人员对疑似、临床病例进行及时发现和诊断；在流行季节前随机抽取正常人群血清，-20℃保存，用ELISA方法进行血清学检测；在6～10月采用定时、定点调查法，对登革热的主要传播媒介白纹伊蚊、埃及伊蚊的种群、孳生环境、伊蚊幼虫指数和成蚊密度进行监测，每月1次。结果2006年云南省发生输入性登革热病例18例；健康人群登革热IgG抗体阳性率8．09％。伊蚊幼虫密度布雷图指数（BI）、容器指数（Cl）分别在14～98、4．7～73．68之间，白纹伊蚊成蚊密度在3．5～34只，人工小时之间。结论云南省输入性登革热疫情有不断上升的趋势；人群抗体水平登革热IgG抗体阳性率较高，提示当地人群中可能存在该病毒的既往感染或隐性感染；媒介伊蚊幼虫布雷图指数、容器指数和白纹伊蚊成蚊密度均较高。对登革热传播具有极高的危险性，应引起高度注意。

Objective To understand the prevalence,immunity and the dynamic changes of Eades vectors of dengue fever in Yunnan Province. Methods Routine monitor of population immunity,cases detection and vector survey were carried out：. Results There 18 imported dengue cases were reported in 2006 and the positive rate of IgG antibody to dengue fever in the health population was 8.09%. The Bruteau index of Aedes albopietus and container index were in the ranges of 14-98 and 4.7-73.68. The density of adult Aedes albopictus was 3.5-34/person.hour. Conclusion The number of imported dengue fever cases shows an increasing trend and the positivea rate of IgG antibody is high,suggesting that there is latent or former infection in the local population. The Breteau index and container index are also high,thus control work be strengthened.