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目的了解2012-2015年洛阳市流行性感冒的流行特征,为流感的防控工作提供依据。方法对2012-2015年洛阳市三家国家级流感监测哨点医院报告的流行样病例(ILI)的监测数据以及相应的病原学检测结果进行描述性流行病学分析。结果 2012-2015年洛阳市三家哨点医院累计报告监测病例421 319例,ILI的平均就诊百分比为4.39%,具有明显的季节性,呈现冬春季高的单峰形态,发病最多的年龄组是0~岁组,其次是5岁~组,共采集标本7 049份,阳性率为12.06%,冬春季的阳性数和阳性率均高于其他季节,各年流感流行优势亚型有所不同。结论洛阳市流感流行峰及流行的优势型别呈现季节性和交替流行的特征,儿童是流感防控的重点人群。
Objective To understand the epidemiological characteristics of influenza in Luoyang City from 2012 to 2015 and provide basis for the prevention and control of influenza. Methods Descriptive epidemiological analysis of the epidemiological data of epidemic-like cases (ILI) reported by three national-level influenza surveillance sentinel hospitals in Luoyang from 2012 to 2015 and the corresponding etiological test results were performed. Results A total of 421 319 surveillance cases were reported in three sentinel hospitals in Luoyang City from 2012 to 2015. The mean percentage of ILI visits was 4.39%, showing a clear seasonal pattern showing a monomodal pattern with high winter and spring seasons. The most frequent age group was 0 ~ Year group, followed by 5-year-old group, a total of 7 049 samples were collected, the positive rate was 12.06%, the positive number and the positive rate in winter and spring were higher than the other seasons, influenza prevalent subtypes were different. Conclusion The prevalence and prevalence of influenza in Luoyang City are seasonal and epidemic. Children are the key population of influenza prevention and control.