2017—2019年江苏淮安市流感流行监测分析  

Analysis of influenza epidemic surveillance in Huai′an City in 2017 - 2019

作　　者：唐丽[1] 何芳 杨鹏飞[1] 李双姝 TANG Li;HE Fang;YANG Pengfei;LI Shuangshu(Huai′an Center for Disease Control and Prevention,Huai′an,Jiangsu 223001,China)

机构地区：[1]江苏省淮安市疾病预防控制中心,江苏淮安223001

出　　处：《公共卫生与预防医学》2021年第4期75-79,共5页Journal of Public Health and Preventive Medicine

基　　金：淮安市创新服务能力建设计划(重点实验室建设)HAP201906。

摘　　要：目的了解淮安市2017—2019年流感病原分布及流行特征,为淮安市流感防控提供依据。方法对中国流感监测信息系统中的流感哨点病原学监测数据进行统计分析,对流感暴发疫情数据进行描述性分析。结果2017—2019年淮安市共报告流感样病例(Influenza-like cases,ILI)103082例,占门急诊就诊病例数的8.96%,每年冬春季为流感高发季节,15岁以下儿童为主要高发人群。全市共发生37起流感暴发疫情,报告病例774人,疫情主要发生在幼儿园、小学及初中。实验室检测6730份样本,核酸检测阳性1093份,检出阳性率为16.24%:新甲H1型417份,占38.15%;季节性H3型251份,占22.96%;Victoria亚型274份,占25.07%;Yamagata亚型151份,占13.82%。流感优势毒株型别交替变换,有时会出现几种型别流感病毒共同存在现象。结论流感常发生于学校,具有明显季节性,建议对高风险人群进行四价流感疫苗的接种。Objective To analyze the distribution and epidemiological characteristics of influenza pathogens in Huai′an City from 2017-2019,and to provide a scientific basis for prevention and control of influenza.Methods The influenzalike illness(ILI)and outbreaks data was collected from China Influenza Surveillance Information System from 2017 to 2019.A descriptive analysis method was used to analyze the influenza data.Results A total of 103082 ILI cases were reported in Huai′an City from 2017 to 2019,accounting for 8.96%of the total outpatient and emergency department visits.Winter and spring were the seasons for the high incidence of influenza,and children under 15 years old were the key population with high incidence.A total of 37 influenza outbreaks occurred in the city,with 774 reported cases.The epidemics mainly occurred in kindergartens,elementary schools,and junior high schools.There were 6730 samples tested in the laboratory,1,093 were positive for nucleic acid test,and the positive rate was 16.24%.Of the 1093 positive samples,417 were tested positive for H1N1 type,accounting for 38.15%;251 were positive for seasonal H3 type,accounting for 22.96%;274 were positive for Victoria subtype,accounting for 25.07%;and 151 were positive for Yamagata subtype,accounting for 13.82%.The types of dominant influenza strains alternated,and sometimes several types of influenza viruses coexisted.Conclusion Influenza often occurs in schools and has obvious seasonality.It is recommended that high-risk groups be vaccinated with quadrivalent influenza vaccine.

关 键 词：流感 流行 监测 

分 类 号：R183[医药卫生—流行病学]