摘要
目的分析北京市2009年甲型H1N1流感流行病学特征。方法采用SPSS11.0软件,对北京市2009年甲型H1N1流感确诊病例的流行病学特征进行描述与分析。结果 2009年北京市共确诊甲型H1N1流感10 802例,重症、危重症病例621例,死亡73例,病死率为0.7%(73/10 802);北京市甲型H1N1流感流行过程可分为输入期、传播期、扩散期、稳中有降期等4个阶段;感染者以青少年为主,占47.9%(5169/10 802),男女性别比为1.3∶1;职业分布以学生最多,占52.2%(5 639/10 802),重症、危重症病例及死亡病例均以离退人员为多,分别为15.9%(99/621)及23.3%(17/73);10月份达到流行高峰。结论北京市2009年甲型H1N1流感病例以青少年学生为主,重症、危重症病例及死亡病例均以离退人员为多。
Objective To describe epidemiological features of pandemic influenza A（H1N1） cases in Beijing,2009.Methods The data of reported pandemic influenza A（H1N1） cases in Beijing were collected and analyzed for their epidemiological features with SPSS software.Results A total of 10 802cases of influenza A（H1N1） were confirmed in 2009,including 621 severe and critical cases and 73 deaths with a case-fatality rate of 0.7 percent.Based on the incidence dates of the cases,the pandemic could be divided into four phases,i.e.,imported from abroad,local transmission,local spread,stable and decreasing phase.There were 52.2 percent of the cases were students at high school,and 15.9 percent of severe case and 23.3 percent of critical case were retirees,respectively,with a male to female ratio of 1.3：1.The highest incidence was reported in Huairou district.Conclusion Epidemic of influenza A（H1N1） in Beijing reached the peak in October 2009,with most of infected cases in students and young people.Most of the severe and critical cases and deaths are retirees.
出处
《中国公共卫生》
CAS
CSCD
北大核心
2011年第1期6-8,共3页
Chinese Journal of Public Health
基金
北京市自然科学基金(7082047)
"十一五"项目重大传染病疫情现场分析与控制技术研究(2009ZX10004-315)
北京市科委科研院所重点任务甲型H1N1流感控制策略研究项目
关键词
甲型H1N1流感
北京
流行病学
特征
influenza A（H1N1） pandemic
Beijing
epidemiology
characteristics
