胡晓芬, 张晶波, 李达, 苗芳, 王永全, 崔京辉. 2009-2011年北京市西城区乙型流行性感冒病毒流行特征分析[J]. 疾病监测, 2011, 26(12): 969-971.
引用本文: 胡晓芬, 张晶波, 李达, 苗芳, 王永全, 崔京辉. 2009-2011年北京市西城区乙型流行性感冒病毒流行特征分析[J]. 疾病监测, 2011, 26(12): 969-971.
HU Xiao-fen, ZHANG Jing-bo, LI Da, MIAO Fang, WANG Yong-quan, CUI Jing-hui. Circulating pattern of influenza B viruses in Xicheng district in Beijing,2009-2011[J]. Disease Surveillance, 2011, 26(12): 969-971.
Citation: HU Xiao-fen, ZHANG Jing-bo, LI Da, MIAO Fang, WANG Yong-quan, CUI Jing-hui. Circulating pattern of influenza B viruses in Xicheng district in Beijing,2009-2011[J]. Disease Surveillance, 2011, 26(12): 969-971.

2009-2011年北京市西城区乙型流行性感冒病毒流行特征分析

Circulating pattern of influenza B viruses in Xicheng district in Beijing,2009-2011

  • 摘要: 目的 通过2009-2011年的连续监测,了解北京市西城区乙型流行性感冒(流感)病毒的流行规律,为制定预防控制措施提供依据。 方法 在北京市西城区两家流感哨点医院采集流感样病例的咽拭子3393份,用犬肾传代细胞进行病毒分离,分离阳性的病毒进一步用血凝抑制试验进行流感病毒株型别鉴定。 结果 从2009年10月到2011年9月,西城区于2010年1、2月以及2011年3、4月分别出现了一次乙型流感的流行。共收集并检测流感样病例咽拭子样本3393份, 其中分离并鉴定出乙型流感病毒阳性106例, 总阳性率为3.12%;以2010年1月阳性率最高,达到19.65%;病毒阳性者平均年龄为(2520)岁, 其中60岁组的阳性率最高,达到5.70%。 结论 2009-2011年北京市西城区乙型流感病毒2年的监测中,Victoria亚型为主要流行株。北京该地区乙型流感病毒主要累及青少年和老年人群。应该加强监测管理,并在流行季节尽快采取预防控制措施以保护公众的身体健康。

     

    Abstract: Objective To understand the circulating pattern of influenza B viruses in Xicheng district in Beijing and provide evidence for developing prevention and control measures. Methods From October 2009 to September 2010, throat swabs were collected from influenza like illness (ILI) patients in two hospitals in Xicheng district for influenza virus isolation by using MDCK cells. Hemagglutination inhibition test was conducted to identify the types or subtypes of isolated strains. Results Among 3393 throat swabs, 106 were positive in influenza B viruses detection, the positive rate was 3.12%. The highest positive rate was 19.65% in January 2010. There were two epidemics in Xicheng district, respectively, during January-February 2010 and during March-April 2011. The mean age of the positive cases was 2520 years and the positive rate in people aged 60 years was highest. Conclusion The major circulating strain of influenza B virus belonged to Victoria lineage. Influenza B viruses mainly affected adolescent and old people in Xicheng district. It is necessary to strengthen the disease surveillance and take timely prevention and control measures when the epidemic occur to protect the public's health.

     

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