北京市2006—2010年登革热发病情况及其传播媒介的调查

Epidemiological characteristics and vector monitoring of dengue fever in Beijing from 2006 to 2010

目的分析北京市近5年登革热病例流行病学特征,并结合北京市病媒生物监测数据,分析北京市出现登革热暴发的风险。方法采用SPSS软件分析北京市登革热病例的流行病学特征;采用CO_2诱蚊灯法调查北京市蚊类种群构成及其密度。结果 2006-2010年北京市累计报告23例登革热病例,均为输入性病例,其中25～59岁病例占95.65%(22/23),男女性别之比为4.75:1。病例的职业分布以干部职员为主(69.57%,16/23)。与2007年相比,2010年白纹伊蚊的构成比增加了25.71倍,密度增加了6.00倍。结论近几年北京市亚优势蚊种白纹伊蚊密度逐年增加,应继续做好蚊类监测,为登革热防控提供科学依据。

Objective To analyze the epidemiological characteristics of dengue fever cases from 2006 to 2010 for determination of the risk of dengue fever outbreaks in Beijing. Methods Data of the reported dengue fever cases in Beijing were collected and analyzed for their epidemiological characteristics with SPSS software. CO2 trapping lamp method was used to monitor the constituent ratio and density of mosquitoes. Results A total of 23 imported dengue fever cases were confirmed, of which 95.65% （22123） of the cases were at the age of 25-59 years. The male-female ratio was 4.75 ： 1. Among them, 69.57% （16/ 23） were office clerks. The constituent ratio and density ofAedes albopictus showed 25.71 times and 6.00 times increase in 2010 than in 2007, respectively. Conclusion The density of subdominant mosquito species （Ae. albopictus） has increased in recent years. Vector monitoring and control measures should be implemented effectively to reduce the outbreak risk.