东莞市2009年流感监测分析  

ANALYSIS ON INFLUENZA SURVEILLANCE IN DONGGUAN CITY IN 2009

作　　者：刘艳璋[1] 钟新光[1] 张巧利[1] 张萌[1] 黄振宇[1] 

机构地区：[1]广东省东莞市疾病预防控制中心,东莞523006

出　　处：《现代预防医学》2011年第7期1316-1318,共3页Modern Preventive Medicine

基　　金：东莞市科技计划医疗卫生类重点科研项目;东莞市甲型H1N1流感监测系统的建立与评估(立项编号:20091051504427)

摘　　要：[目的]了解东莞市流感流行动态,探索流行规律,为该市流感的防控提供科学依据。[方法]每周统计监测点流感样病例数据,采集流感样病例咽拭子标本进行流感病毒核酸检测,并进行季节性流感病毒分离。[结果]东莞市监测门诊全年共监测门诊病例2688759人次,累计报告流感样病例61982例,流感样病例占门急诊病例总数构成比为2.31%;流感病毒核酸检测769例,结果阳性377例,核酸检测阳性率为49.02%,其中新型甲型H1N1流感197例,季节性H3N2型91例,季节性H1N1型40例,乙型29例,其他型别20例;共分离出季节性流感病毒83株,分离阳性率为6.72%,其中季节性H3N2流感病毒31例,乙型流感病毒30例,季节性H1N1流感病例20例,季节性H1N1及乙型流感病毒混合感染2例;共报告流感及流感样病例暴发疫情64起,其中甲型H1N1流感聚集性疫情50起、季节性流感及流感样病例聚集性疫情各7起,学校疫情占93.75%。东莞市2009年流感发病高峰为6～7月及9～12月,1～5月以乙型流感为主,6～8月以季节性甲型流感为主,9～12月以甲型H1N1流感为主导。[结论]2009年该市出现了两个流感活动高峰,6月份以来该市流感的优势毒株逐渐由季节性流感向甲型H1N1流感转变,预计在2010年上半年,新型甲型H1N1流感病毒传播将依然活跃,出现暴发疫情的风险仍然存在,仍会有重症和死亡病例的出现。[Objective]To know the epidemical trends and learn the epidemical law of influenza in Dongguan city in order to provide the scientific evidence to influenza prevention and control.[Methods]The influenza-like illness（ILI）data were collected weekly from ILI monitoring site,the throat swabs taken from ILIs were tested for virus nucleic acid of influenza and seasonal influenza virus were isolated.[Results]2 688 759 out-patient cases were reported in which 61 982 were ILIs and ILI% was 2.31%.769 ILI cases were tested for the influenza virus nucleic acid and 377 cases were positive,which positive rate was 49.02%.Among positive samples,197 were novel influenza A（H1N1）,91 were seasonal influenza A（H3N2）,40 were seasonal influenza A（H1N1）,29 were seasonal influenza B and 20 samples were other types.83 seasonal influenza virus strains were isolated and isolation rate was 6.72%,among which 31 strains were seasonal influenza A（H3N2）,30 strains were seasonal influenza B,20 strains were seasonal influenza A（H1N1）and 2 cases were found infected by seasonal influenza A（H1N1）and B virus mixed.64 outbreaks were reported in which 50 caused by novel influenza A（H1N1）,7 by seasonal influenza virus and 7 were ILI outbreak.Outbreaks occurred in schools accounted for 93.75%.[Conclusion]The epidemic peak of influenza turns up during June-July and September-December in 2009.Seasonal influenza B is predominant during January-May,seasonal influenza A is predominant during June-August and novel influenza A（H1N1）is predominant during September-December.

关 键 词：流感 监测 流感病毒 

分 类 号：R511.7[医药卫生—内科学]