上海预防医学2025，Vol.37Issue(10)：821-825,841,6.DOI:10.19428/j.cnki.sjpm.2025.250095
2023-2024年北京市流感流行特征
Epidemiological characteristics of influenza in Beijing,2023-2024
摘要
Abstract
[Objective]To understand the epidemic characteristics of influenza in Beijing from 2023 to 2024,and to provide a scientific basis for the prevention and control of influenza.[Methods]Data on influenza-like illness(ILI)from secondary level and above hospitals,etiology surveillance data,and influenza clusters outbreaks data from 2023-2024 were used to analyze the epidemic trend and pathogenic characteristics of influenza.Furthermore,an influenza comprehensive index was used to categorize the epidemic intensity at the severity level.[Results]A total of 2 065 857 ILI cases were reported in 2023-2024 epidemic season,and the percentage of ILI was 3.67%.The age group of 5-14 years accounted for the highest proportion of ILI(30.48%).A total of 41 766 throat swabs from ILI were detected,with a positive rate of 17.28%.A(H3N2)(51.86%)and B Victoria(41.93%)were the most prevalent subtypes of influenza virus.Clustered influenza outbreaks occurred mainly in primary schools(57.78%)and middle schools(35.55%),mainly caused by the influenza A(H3N2)subtype(85.93%).According to the influenza comprehensive index(I),the period of influenza activity and above(I＞0.5)lasted for a total of 37 weeks,accounting for 71.15%of the entire influenza season.[Conclusion]Compared with previous years,the epidemic level of influenza in Beijing was increased in 2023-2024,and the peak time became earlier.The comprehensive index method can objectively evaluate the level of influenza epidemic and provide suggestions for the future prevention and control of influenza in Beijing.关键词
流感/监测/流感样病例/流感综合指数/分级Key words
influenza/surveillance/influenza-like illness/influenza comprehensive index/classification分类
医药卫生引用本文复制引用
ZHANG Lu,ZHANG Daitao,DUAN Wei,SUN Ying,ZHANG Li,MA Chunna,ZHANG Jiaojiao,LI Jia,MA Jiaxin,WANG Yingying,HU Xiaodi..2023-2024年北京市流感流行特征[J].上海预防医学,2025,37(10):821-825,841,6.基金项目
北京重大呼吸道传染病研究中心项目(BJRID2025-005) （BJRID2025-005）
