长春市2007～2008年流感监测情况分析

目的:及时了解长春市流感病毒优势株的变化,分析预测流感流行的趋势和特点,为流感防治提供科学依据。方法:采集门诊流感样病人的咽拭子和漱口液,接种于MDCK细胞进行病毒分离和分型鉴定。结果:2007年10月~2008年3月长春市CDC从299例流感样病例标本中分离到94株流感病毒,分离阳性率为31.44%,其中H3N2型41株(占43.62%),B-victoria系36株(占38.30%),B-yamagata系17株(占18.08%)。结论:2007~2008年度长春市流感的流行情况较为平静,H3N2型,B-victoria系,B-yamagata系成为流感流行的优势株,与上一监测年度(H1N1型,H3N2型)不同。

Analysis of influenza surveillance in Changchun during 2007～2008

Objective:To detect the changes of the predominant strains of influenza and forecast the trends and characters of influenza so as to provide scientific bases for the prevention of influenza.Methods:Throat swab and gargling specimens were collected from influenza-like patients.Influenza viruses were isolated by MDCK cells and typed by hemagglutination inhibition(HI) test.Results:From October 2007 to March 2008,299 specimens were collected from influenza-like patients,from which 94 strains of influenza viruses were isolated with the isolation rate of 31.44%.Thereinto,41 strains were identified as H3N2(account for 43.62%),36 strains as B-victoria(account for 38.30%) and 17 strains as B-yamagata(account for 18.08%).Conclusion:The case is calm in Changchun during 2007-2008.The predominant strains are H3N2,B-victoria and B-yamagata which are different from the predominant strains(H1N1and H3N2) of the past.