2009—2010年无锡市流行性感冒监测分析

目的:监测和分析无锡市流行性感冒(流感)的流行动态和病原学特征,为流感的预防控制提供科学依据?方法:对2009年1月~2010年12月无锡市流感监测哨点的流感样病例(influenza like illness,ILI)发病动态?流感病毒分离资料进行监测和分析?结果:共监测报告ILI病例29 658例,ILI占门诊病例总数的比(ILI%)平均为3.18%?采集咽拭子标本3 544份,分离出流感病毒437株,分离率为12.33%?ILI和ILI%的高峰期为2009年8~11月,ILI?ILI%和流感病毒分离率三者的高峰相互吻合,并与流感优势毒株交替变化一致?结论:新甲型H1N1流感病毒的出现造成无锡市流感监测数据发生变化,关注ILI动态?ILI%动态?毒株型别交替变化和新型毒株的出现,可以评价和预警流感流行情况?

Analysis on characteristics of influenza in Wuxi from year 2009 to 2010.

Abstract: Objective To explore the characteristics and the changes of the dominant strains of influenza in Wuxi, to provide scientific basis for the prevention of influenza. Methods Data of influenza-like illness(ILI) from monitoring sites in outpatients in year 2009-2010 were analyzed. Results From January 2009 to December 2010, there were 29658 cases of ILI, which on average accounted for 3.18% of all the OPD patients. A total of 3544 samples were collected, and 437 strains were identified for influenza virus with an average isolation rate of 12.33%. There was a peak which occurred from August to November in 2009, and in this period the number of ILI cases, the ratio of ILI in all outpatient visits and the isolation rates were higher than those in other periods. Conclusion The epidemic of influenza A(H1N1) had changed the epidemiologic characteristics of influenza in Wuxi, The influenza virus has tendency of switchover to dominant strain.