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目的了解河南省流行性感冒(流感)流行规律,为流感防控提供依据。方法对河南省2011—2013年流感监测年度的流感样病例监测资料、病毒分离鉴定结果信息进行描述分析。结果河南省流感流行季节为冬春季,病例主要集中在15岁以下年龄组,占全部流感病例的80%以上;连续3年共检测流感样病例咽拭子标本5 992份,分离出流感病毒664株,毒株类型以B型和A(H3N2)型交替出现,伴有季节性A(H1N1)型其他毒株散发。2011—2013年河南省共报告流感暴发疫情12起,均发生在中小学校及托幼机构。结论 2011—2013年河南省流感流行的季节性特征较为明显,流感活动较低,未出现流行高峰。
Objective To understand the prevalence of influenza (influenza) in Henan Province and provide basis for prevention and control of influenza. Methods The surveillance data of flu-like cases and the information of virus isolation and identification results of influenza in 2011-2013 in Henan Province were analyzed and described. Results The epidemic season of flu in Henan Province was winter and spring. The cases mainly concentrated in the age group of 15 years and younger, accounting for more than 80% of the total flu cases. A total of 5 992 swab samples of influenza-like cases were detected for 3 consecutive years and influenza virus 664 Strains and strain types alternate with type B and type A (H3N2) with the release of other strains of seasonal A (H1N1) type. In 2011-2013, a total of 12 influenza outbreaks were reported in Henan Province, both in primary and secondary schools and nurseries. Conclusion The seasonal characteristics of influenza in Henan province during 2011-2013 are obvious, with low flu activity and no epidemic peak.