浙江省2009年学生甲型H1N1流感流行特征分析  

Epidemiological characteristics of Influenza A(H1N1) among students in Zhejiang Province during 2009

作　　者：方乐[1] 林君芬[1] 余昭[1] 柴程良[1] 方琼姗[1] 

机构地区：[1]浙江省疾病预防控制中心,杭州310051

出　　处：《中国学校卫生》2011年第7期805-806,共2页Chinese Journal of School Health

基　　金：浙江省卫生厅医药卫生科学研究基金项目(2010KYB030);浙江省科技厅重大项目(2009C03011-1)

摘　　要：目的探讨浙江省学生甲型H1N1流感(甲流)流行特征,为其防控提供科学依据。方法对中国疾病预防控制信息系统中2009年浙江省学生甲流个案信息和聚集性疫情进行描述分析。结果浙江省学生甲流病例数占全市病例总数的比例为44.20%(217/491)～78.70%(532/676)不等;高达91.23%(52/57)的聚集性甲流疫情发生在学校。学生甲流病例的住院率和病死率分别为16.05%(1 188/7 402)和0.027%(2/7 402)。全省学生甲流于9月9-11日首次达到流行高峰,日发病数为67例;然后疫情逐步攀升并于11月21-23日达到一个新高峰,其流行强度约为首次高峰的2.91倍;随后疫情持续减弱。结论学生应成为甲型H1N1流感尤其是其聚集性疫情防控的重点人群。Objective To explore the epidemiological characteristics of Novel Influenza A（H1N1） among students in Zhejiang Province to provide scientific references for its control and prevention.Methods Descriptive epidemiological analyses were employed to study cases of Novel Influenza A（H1N1） and its cluster epidemics in Zhejiang province during year 2009 through ＂China Information System for Disease Control and Prevention＂.Results Cases of Novel Influenza A（H1N1） among students accounted for 44.20%（217/491） to 78.70%（532/676） of total cases in each city of Zhejiang Province.Up to 91.23%（52/57） cluster epidemics of Novel Influenza A（H1N1） broke out in schools.The hospitalization rate and case fatality rate of Novel Influenza A（H1N1） among students were 16.05%（1 188/7 402） and 0.027%（2/7 402） respectively.The pandemic firstly peaked during September 9 to 11 with 67 new cases attacked each day.With further spread of the pandemic,it finally reached a new peak during November 21-23,which was 2.91 times stronger than the first peak.And then the pandemic became weaker and weaker gradually.Conclusion Students are one of the most important populations for disease control and prevention against Novel Influenza A（H1N1） especially for cluster epidemics.

关 键 词：流感病毒A型 H1N1亚型 流行病学研究 学生 

分 类 号：R373.13[医药卫生—病原生物学] R181.22[医药卫生—基础医学]