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[目的]了解2009年开封市甲型H1N1流感流行特征,为制定预防控制策略和措施提供科学依据。[方法]对2009年通过“疾病监测信息报告管理系统”报告的开封市甲型H1N1流感病例进行分析。[结果]2009年报告甲型H1N1流感180例,其中重症及危重病例5例,死亡1例(病死率为0.56%)。9月14日出现首例本地感染病例,当月发病26例,10月发病70例,11月发病77例,12月发病6例;城区发病率为15.98/10万,其他各县发病率为1.27/10万。180例病人中,男性108例,女性72例;10岁以下10例,10~20岁134例,20~30岁23例,30岁以上13例;学生153例,其他27例。检测流感样病人咽拭子703份,甲型H1N1流感核酸阳性169例。发生19起暴发疫情,17起在学校,暴发点平均罹患率为13.57%。[结论]开封市2009年甲型H1N1流感疫情处于一般水平,今后要加强疫情监测,及时发现,尽早控制疫情。
[Objective] To understand the epidemic characteristics of Influenza A (H1N1) in Kaifeng City in 2009 and provide a scientific basis for formulating prevention and control strategies and measures. [Method] The case of Influenza A (H1N1) H1N1 influenza in Kaifeng City, which was reported in 2009 by the Disease Surveillance Information Reporting Management System, was analyzed. [Results] 180 cases of Influenza A (H1N1) were reported in 2009, of which 5 cases were severe and critically ill and 1 died (case fatality rate was 0.56%). September 14, the first case of local infection, the incidence of 26 cases the month, 70 cases of onset in October, 77 cases of onset in November, 6 cases in December; urban incidence of 15.98 / 100,000, the incidence of other counties was 1.27 /100,000. Of the 180 patients, 108 were male and 72 were female; 10 were below 10 years old, 134 were from 10 to 20 years old, 23 were from 20 to 30 years old, 13 were over 30 years old; 153 were students and 27 were other. 703 samples of throat swabs were detected in influenza-like patients, and 169 were positive for influenza A (H1N1). 19 outbreaks occurred, 17 in schools, the average attack rate was 13.57%. [Conclusion] The epidemic situation of Influenza A (H1N1) virus in Kaifeng City was at a general level in 2009. In the future, it is necessary to strengthen the surveillance of epidemic situation and find out in time so as to control the outbreak as soon as possible.