连云港市2018—2022年度流感暴发疫情流行病学特征及相关影响因素  

Epidemiological characteristics of influenza outbreaks and associated influencing factors in Lianyungang City from 2018 to 2022

作　　者：沈飞虎 程晓庆 赵兴[1] 杨皓舒[1] 徐梦蝶 穆星宇 李海朋[1] SHEN Fei-hu;CHENG Xiao-qing;ZHAO Xing;YANG Hao-shu;XU Meng-die;MU Xing-yu;LI Hai-peng(Lianyungang Municipal Center for Disease Control and Prevention,Lianyungang Jiangsu 222003,China;不详)

机构地区：[1]连云港市疾病预防控制中心,江苏连云港222003 [2]江苏省现场流行病学培训项目 [3]江苏省疾病预防控制中心

出　　处：《江苏预防医学》2024年第2期191-194,共4页Jiangsu Journal of Preventive Medicine

基　　金：江苏省卫健委科研项目(Z2020078)。

摘　　要：目的了解连云港市流感暴发疫情的流行病学特征,为防控流感暴发提供依据。方法收集连云港市2018—2022年度流感暴发疫情资料,对其流行病学特征进行描述性分析,并分析流行强度和疫情持续时间的影响因素。结果2018—2022年度连云港市共报告160起流感暴发疫情,累计发病4701例,平均罹患率为1.22%,主要发生在小学,114起,占71.25%;地区分布主要在海州区,112起,占70.00%。流感暴发高峰期在每年3月(54.38%)及12月(22.50%),总体以A型流感为主,但优势型别每年呈交替流行。不同学校类型中,幼儿园罹患率>3%的疫情数占比最大,为75.00%(9/12);学校规模越小,罹患率>3%的疫情数占比越大。规模≤1000人的学校疫情持续时间≤7 d占比最高,为79.41%(27/34)。结论流感暴发疫情多发生于冬春季,小学是高发场所,幼儿园、小规模学校的流感罹患率相对较高,需要重点关注。Objective To investigate the epidemiological characteristics of influenza outbreaks in Lianyungang City,so as to pro-vide insights into management of influenza.Methods All data pertaining to influenza outbreaks in Lianyungang City from 2018 to 2022 were collected.The epidemiological characteristics of influenza outbreaks were analyzed using a descriptive epidemiological meth-od,and factors affecting the epidemic intensity and duration of influenza outbreaks were identified.Results A total of 160 influenza outbreaks were reported in Lianyungang City from 2018 to 2022,with 4701 influenza cases reported.Influenza outbreaks predominantly occurred in primary schools(114 outbreaks,71.25%)and in Haizhou District(112 outbreaks,70.00%),and peaked in March(54.38%)and December(22.50%)each year.Influenza A was the dominant type;however,the dominant type of influenza alternated each year.The largest proportion of influenza outbreaks with an attack rate of>3%in all outbreaks was seen in kindergarten(75.00%,9/12),and the proportion of influenza outbreaks with an attack rate of>3%in all outbreaks increased with a reduced school size.In ad-dition,the proportion of influenza outbreaks with epidemic duration of 7 days and less in all outbreaks was observed in schools with 1000 and less students(79.41%,27/34).Conclusions Influenza outbreaks predominantly occurred in winter and spring and primary schools in Lianyungang City during the period from 2018 to 2022,and the attack rate of influenza was relatively high in kindergartens and small schools,which should paid much attention to.

关 键 词：流感 暴发疫情 小学 流行病学特征 

分 类 号：R511.7[医药卫生—内科学]