福建省南平市2009年流感监测情况分析

Analysis on influenza surveillance in Nanping in 2009

目的:了解南平市流感病毒优势株的变化,分析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:2009年1月-12月南平市CDC从1848份流感样病例标本中分离到240株流感病毒,分离阳性率13.0%,其中H1N1型流感病毒株85株(占35.4%),H3N2型流感病毒株42株(占17.5%),B型流感病毒株56株(占23.3%),新H1N1型流感病毒株57株(占23.8%)。结论:2009年1月-2009年12月南平流感流行情况严重,是流感大流行年,1月-10月H1N1型,成为流感流行的优势株,11月-12月流感流行趋势改变,出现新高峰新H1N1大流行,新H1N1型成为流感流行的优势株。

Objective：To detect the changes of the predominant strains of influenzaand 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 January to December 2009,1848 specimens were collected from influenza – like patients,from which 240 strains of influenza viruses were isolated with the isolation rate of 13.0%.85 strains were identified as H1N1（account for 35.4%）,42 strains were identified as H3N2（account for 17.5%）,56 strains were identified as B-type（account for 23.3%）,57 strains were identified as new H1N1（account for 23.8%）.Conclusion： The whole year in 2009,in which the threatening influenza epidemic happened in Nanping,was the year of pandemic influenza.The dominant strain was H1N1 from January to October,but from November to December the trend 0f influenza epidemic changed,the new peak of new H1N1 influenza epidemic had happened,which had been the dominant strains of influenza.