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目的了解北京市宣武区初期甲型H1N1流感的流行病学特征,为预防控制工作提供依据。方法病例资料来自中国疾病预防控制信息系统,结合宣武区疾病预防控制中心的病例个案调查资料,建立病例数据库,采用描述性流行病学的方法进行分析。数据采用SPSS 13.0软件作统计学分析。结果至2009年10月10日,宣武区共发现甲型H1N1流感确诊病例120例,其中境外输入病例7例,本地病例113例。病例在人口密集地区发病多,以青少年为主,症状体征多较轻,转归良好。发生的2起聚集性疫情,在采取有效隔离措施后,续发病例减少。结论甲型H1N1流感病例多为轻症患者,多发生于青壮年人群。学生应作为今后的防控重点。
Objective To understand the epidemiological characteristics of Influenza A (H1N1) in the early stage of Xuanwu District in Beijing and provide the basis for prevention and control. Methods The case data were collected from China Disease Prevention and Control Information System. Combined with the case investigation data of Xuanwu CDC, the case database was constructed and analyzed by descriptive epidemiology. Data were analyzed by SPSS 13.0 software. Results By October 10, 2009, a total of 120 confirmed cases of Influenza A (H1N1) were found in Xuanwu District, including 7 imported cases and 113 local cases. The incidence of cases in densely populated areas, mostly young people, more mild signs and symptoms, good prognosis. Occurred in two clusters of epidemic, after taking effective isolation measures, fewer cases of renewal. Conclusion Influenza A (H1N1) cases are mostly mild cases and occur mostly in young adults. Students should be the focus of future prevention and control.