2013-2023年山东省东营市流感样病例流行病学及病原学特征分析
Epidemiological and etiological analysis of influenza-like illness in Dongying City,Shandong Province,2013-2023
马晓瑜 1王华丽 1李静1
作者信息
- 1. 东营市疾病预防控制中心,山东东营 257091
- 折叠
摘要
目的 分析山东省东营市流感样病例(influenza-like illness,ILI)流行病学和病原学特征,为流感防控提供科学依据.方法 通过中国流感监测信息系统收集2013年4月—2023年3月东营市ILI和病原学监测数据,分析ILI流行特征以及病原型别分布.结果 2013年4月—2023年3月东营市共报告ILI 307 723例,ILI就诊比例(ILI％)为3.87％,流行高峰均出现在冬春季,ILI％在每年的第48周至次年的第6周(冬季)会达到峰值.不同年度ILI％差异有统计学意义(x2=9 542.089,P＜0.01).ILI年龄分布以0～＜5岁为主,191414例(62.20％).共采集ILI咽拭子样本7 982份,检出流感病毒阳性样本948份(11.88％),其中甲型H1N1亚型最多,为328份(34.60％),流感病毒阳性检出主要集中在冬春季,不同流感监测年度呈现单一优势毒株交替流行或多种型别共同流行的特征.结论 东营市流感活动基本符合我国北方城市流感的流行特点.应重点关注儿童和老年群体,宣传普及流感防控知识,提高人群免疫保护水平.
Abstract
Objective To analyze the epidemiological and etiological characteristics of influenza-like illness(ILI)in Dongying City,Shandong Province,aiming to provide scientific evidence for influenza prevention and control.Methods Through the China influenza surveillance information system,the data of ILI and pathogen surveillance in Dongying City from April 2013 to March 2023 were collected,and the epidemiological characteristic and pathogen distribution of ILI were analyzed.Results A total of 307 723 ILI cases were reported in Dongying City from April 2013 to March 2023 with an ILI rate of 3.87％.Incidence peaks occurred during the winter-spring seasons,with the ILI rate peaking from the 48th week of each year to the 6th week of the following year(winter).The differences in ILI rates among different monitoring years were statistically significant(x2=9 542.089,P＜0.01).The age distribution of ILI was mainly in the age group of 0-＜5 years old(191 414 cases,62.20％).Out of 7 982 swabs collected from ILI cases,948 influenza virus strains were identified,with a positive rate of 11.88％.The most prevalent subtypes were influenza A(H1N1)virus(328 cases,34.60％).Influenza virus detection rates were highest during the winter-spring seasons,and different influenza seasons showed characteristics of single dominant strains circulating alternately or multiple subtypes co-circulating.Conclusions The epidemic characteristics of influenza in Dongying City were basically consistent with the influenza epidemic characteristics in the north of China.Targeted attention should be given to children and the elderly,along with efforts to promote influenza prevention and control measures to enhance population immunity.
关键词
流感样病例/流感病毒亚型/流行特征/病原学监测Key words
Influenza-like illness/Influenza virus subtypes/Epidemiological characteristics/Pathogen surveillance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据