2018-2023年柳州市流感流行病学特征分析

Analysis of epidemiological characteristics of influenza in Liuzhou City from 2018 to 2023

目的分析2018—2023年柳州市流感的流行病学特征,为制定相应的防控策略提供科学依据。方法从中国疾病预防控制中心信息系统中的流感监测系统导出2018—2023年新报告流感样病例资料,使用描述性研究方法对柳州市流感样病例报告数据进行统计分析。结果柳州市2018—2023年流感哨点医院共报告流感样病例(ILI)248256例,年均占比3.10%,报告流感聚集性疫情196起,不同年份的ILI%差异有统计学意义(χ^(2)=1241280.00,P<0.001),2023年ILI%最高6.24%,流感发病大体上呈逐年递增趋势(χ_(趋势)^(2)=164610.479,P<0.001)。流感样病例发病有明显的季节性,流行高峰为每年的12月至次年1月。15岁以下儿童为高发人群,占比79.95%。结论柳州市流感样病例发病呈上升趋势,以青壮年为主,防疫应将重点人群作为防控及教育工作的主体,推广流感疫苗接种,并加强学校等场所的流感防控工作。

Objective To analyze the epidemiological characteristics of influenza in Liuzhou City from 2018 to 2023,so as to provide scientific basis for formulating corresponding prevention and control strategies.Methods The data of newly reported influenza-like(ILI)cases from 2018 to 2023 were extracted from the influenza surveillance system of the information system of the Chinese Center for Disease Control and Prevention,and the data of ILI cases reported in Liuzhou City were statistically analyzed by descriptive research methods.Results A total of 248256 ILI cases were reported in Liuzhou from 2018 to 2023,accounting for 3.10%annually,and 196 influenza clusters were reported,and ILI%among different years was statistically significant(χ^(2)=1241280.00,P<0.001),and the highest ILI%in 2023 was 6.24%.The incidence of influenza was generally increasing year by year(χ_(trend)^(2)=164610.479,P<0.001).The incidence of ILI cases was obviously seasonal,and the epidemic peak was from December to January each year.Children under the age of 15 were the highest incidence group,accounting for 79.95%.Conclusion The incidence of ILI cases in Liuzhou City is on the rise,mainly in young and middle-aged people.Epidemic prevention and control should focus on key population as the main body of prevention and control and education,promote influenza vaccination,and strengthen the prevention and control of influenza in schools and other places.