金昌市2009至2015年流感样病例监测分析

Surveillance analysis of influenza-like cases from 2009 to 2015 in Jinchang city

目的:分析金昌市流行性感冒(流感)流行特征,为制定防控策略提供依据。方法:对金昌市2009-2015年流感样病例(ILI)监测资料和病原学检测结果进行流行病学分析。结果:2009-2015年金昌市监测流感样病例6756例,占门急诊病例比例均值的2.61%;全年均有病例发生,主要集中在40周至次年16周;ILI主要集中在0-5岁组;7年间共送检ILI标本3245份,阳性率8.69%,其中,季节性流感107例,B型流感69例,新甲型H1N1流感93例;2010年和2015年以季节H3型为主,2012年以B型为主,2009年、2013年和2014年以新甲型H1N1为主,2011年以季节性H3和新甲型H1N1型混合为主。结论:金昌市流感发病相对稳定;新甲型H1N1、季节性H3及B型流感毒株是金昌市2009-2015年间的主要流感流行毒株。

Objective：To analyze the epidemiological characteristics of influenza from 2009 to 2015 in Jinchang city, which would provide evidence for it’s prevention and control. Methods：Surveillance and pathogenic detection data of influenza were collected and ana-lyzed. Results：A total of 6756 influenza-like cases were collected from 2009 to 2015, accounting for 2.61%of the total outpatients. Cases oc-curred through out the year but with more cases from the 40th week to 16 week of the next year. The incidence rate of influenza-like was peaked in the 0~5 years age group. And a total of 3245 influenza virus strains were detected during this period, and the positive rate is 8.69%, includ-ing 107 strains of seasonal influenza, 69 strains of influenza B viruses and 93 strains of 2009 pandemic influenza A （H1N1） virus. Influenza A viruses were predominant in 2010 and 2015, influenza B viruses were predominant in 2012, and 2009 pandemic Influenza A （H1N1） virus were predominant in 2009 and 2013 and2014. The seasonal H3 and mixed type A（H1N1） in 2011.Conclusion：The incidence of seasonal influenza was relatively stable in Jinchang from 2009 to 2015. Influenza A （H1N1） virus and seasonal H3 and B influenza strains were predominant strains.