保健医学研究与实践2025，Vol.22Issue(1)：8-13,6.DOI:10.11986/j.issn.1673-873X.2025.01.02
重庆市2012-2022年学校流感样病例暴发疫情流行特征及影响因素
Epidemiological characteristics and influencing factors of school influenza-like illness outbreaks in Chongqing from 2012 to 2022
摘要
Abstract
Objective To analyze the epidemiological characteristics and influencing factors of school influenza-like illness(ILI)outbreak epidemics in Chongqing municipality during 2012-2022,and to provide evidence for the formulation of pre-vention and control measures.Methods Data were obtained from the China Influenza Surveillance Information System and the Public Health Emergency Reporting and Management Information System.Descriptive statistical methods were used to analyze the epidemiological characteristics of school ILI outbreak epidemics in Chongqing from 2012 to 2022.Results Dur-ing 2012-2022,a total of 246 school ILI outbreak epidemics were recorded in Chongqing,with 7,869 reported cases.The incidence rate ranged from 0.27%to 44.74%,showing an overall upward trend.A total of 3,902 respiratory samples were collected,with an overall positive detection rate of influenza virus nucleic acid of 76.01%.The epidemic peaks mainly oc-curred in the winter-spring season,with a duration of(17.71±11.06)days.Outbreaks were primarily distributed in the southeastern and northeastern regions of Chongqing,accounting for 65.44%of the total number of outbreaks.The primary sites of occurrence were concentrated in primary schools,with primary school outbreaks accounting for 63.82%overall.During 2012-2022,both type A and type B influenza viruses were detected,with two or more types of influenza viruses cir-culating each year.The dominant strains mainly showed a trend of alternation among type A H1 N1,type A H3 N2,and type B BV.Conclusion School ILI outbreak epidemics are relatively common in Chongqing,primarily among school-age children aged 6-17 years,with rural primary schools being the high-incidence sites.It is recommended that relevant depart-ments strengthen influenza surveillance,monitor real-time influenza dynamics,epidemic trends,and viral mutations,and raise the coverage of influenza vaccination among school-age children.关键词
流感/流感样病例/暴发疫情/学校/重庆市Key words
Influenza/Influenza-like illness/Outbreak epidemic/School/Chongqing分类
临床医学引用本文复制引用
杨霜,漆莉,龙江,熊宇,杨举乐,李婷婷,付晓庆,周艾霖,赵勇..重庆市2012-2022年学校流感样病例暴发疫情流行特征及影响因素[J].保健医学研究与实践,2025,22(1):8-13,6.基金项目
重庆市科学技术局急性传染病预防控制技术研究与应用项目(cstc2024ycjh-bgzxm0224). （cstc2024ycjh-bgzxm0224）
