论文部分内容阅读
目的:分析探讨2009~2012年武威市流行性感冒(简称流感)的流行特征,为流感的防控提供科学依据。方法:收集2009年6月~2012年12月武威市流感样病例及病原学监测资料,分析流感样病例就诊比(ILI%)的变化规律、流感样病例的年龄分布和流感病毒各亚型的变化。结果:2009~2012年,武威市的ILI%分别是1.94%、1.55%、1.12%、1.15%,ILI%高峰分别出现在6月(2009年)、7月(2010年)和10月~次年3月(2011年和2012年)。ILI年龄构成显示病例以15岁以下人群为主。2009~2012年,ILI样本病原学检测阳性率为19.00%;2009年,甲型H1N1为优势毒株,构成比是76.64%,2010年为季节性H3(60.00%)、B型(29.23%)混合流行;2011年主要是甲型H1N1(26.47%)、季节性H3(29.41%)、A未分型(29.41%);2012年为季节性H3(31.78%)、B型(53.49%)混合流行。结论:2009年甲型H1N1流感大流行之后,武威市流感的活动较为平稳,流行优势毒株不断发生变化。
Objective: To analyze and discuss the epidemiological characteristics of influenza in Wuwei city from 2009 to 2012, and provide a scientific basis for the prevention and control of influenza. Methods: Influenza-like cases and etiological monitoring data collected from June 2009 to December 2012 in Wuwei City were collected. The changes of ILI%, the age distribution of influenza-like cases and the distribution of influenza virus subtypes Variety. Results: From 2009 to 2012, the ILI% of Wuwei City were 1.94%, 1.55%, 1.12% and 1.15%, respectively. The peak of ILI% appeared in June (2009), July (2010) and October ~ March (2011 and 2012). The age structure of ILI shows that the majority of cases are under 15 years of age. In 2009 and 2009, the positive rate of ILI sample etiology was 19.00%. In 2009, the dominant strain of H1N1 was 76.64%, the seasonal H3 (60.00%) and B (29.23%) in 2010, (26.47%), seasonal H3 (29.41%) and A undifferentiated (29.41%) in 2011, seasonal H3 (31.78%) and type B (53.49%) in 2012 popular. Conclusion: After Influenza A (H1N1) 2009 pandemic, the activity of influenza in Wuwei City was relatively stable, and the prevailing strains of strain kept changing.