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目的了解岳阳市2009年-2012年流行性感冒的流行概况,为流感的防控提供科学依据。方法每周统计哨点医院流感样病例(ILI),采集ILI鼻咽拭子标本,采用Real time RT-PCR和MDCK细胞病毒分离及血凝及血凝抑制试验进行病毒检测和分型。结果流感样病例百分率分别为11.52%、4.03%、7.49%和8.10%,ILI年龄段集中在0~岁和5~岁年龄组,共检测ILI鼻咽拭子标本1871份,检出率为30.79%,2009年优势毒株为H3和H1N1,2010年-2011年为B型,2012年为H3和B型。结论岳阳市2009年-2010年出现新甲型H1N1流感暴发,2010年-2012年全年疫情呈散发、低发流行;各年的优势毒株有差异,实行网络监测对科学防控流感十分必要。
Objective To understand the prevalence of influenza in Yueyang from 2009 to 2012 and provide a scientific basis for the prevention and control of influenza. Methods The influenza-like illness (ILI) in sentinel hospitals was collected every week. Nasopharyngeal swab specimens were collected and detected by real time RT-PCR, MDCK virus isolation and hemagglutination and hemagglutination inhibition tests. Results The percentages of influenza-like cases were 11.52%, 4.03%, 7.49% and 8.10%, respectively. The ILI ages ranged from 0 to 5 years and 5 to 17 years old. A total of 1871 nasopharyngeal swab specimens were detected, with a detection rate of 30.79 The dominant strains were H3 and H1N1 in 2009, B in 2010-2011 and H3 and B in 2012. Conclusion The outbreak of the new influenza A (H1N1) virus in 2009 and 2010 in Yueyang City showed that the outbreak was endemic in 2010 and 2012. The dominant strains were different in each year. It is very necessary to carry out network monitoring to prevent and control the influenza .