Comparison of epidemiological characteristics of seasonal influenza in Xicheng District, Beijing, in 2018-2029 to 2023-2024
10.3969/j.issn.1006-2483.2026.02.011
- VernacularTitle:2018—2019年和2023—2024年北京市西城区流行性感冒流行特征对比
- Author:
Xiaokan WEI
1
;
Di QIN
1
;
XiuGang GUAN
1
;
Yanhui CHU
1
Author Information
1. Xicheng District Center for Disease Control and Prevention, Xicheng District, Beijing 100120, China
- Publication Type:Journal Article
- Keywords:
Influenza;
Incidence rate;
Changing trend;
Etiology;
Visit interval
- From:
Journal of Public Health and Preventive Medicine
2026;37(2):49-53
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the epidemic characteristics of seasonal influenza in Xicheng District, Beijing, between 2018-2019 and 2023-2024. Methods The present study was a cross-sectional study. The influenza cases and etiological surveillance data of Xicheng District, Beijing in 2018-2019 and 2023-2024, respectively, were analyzed to study the differences in the incidence rate of influenza cases in different ages, regions, occupations, and etiological detection results during the four years. Results There were significant differences in the incidence rates of influenza (χ2=37 038.65，P＜0.05) and the interval between visits (Z=468.692, P < 0.05) in 2018, 2019, 2023 and 2024. There were statistically significant differences in the incidence rates of influenza among different age groups, streets, and occupations during the four years (Z=75.646, 209.276, 72.132, 361.176, 43.570, all P < 0.05). Compared with 2018-2019, the growth rate of influenza in Xicheng District, Beijing in 2023-2024 was the highest in the 15-24 year-old group, Tianqiao Street, and housework and unemployed people. The difference in the interval between influenza visits among people of different age groups during these 4 years was statistically significant (P < 0.05). The growth rate of the interval between influenza visits in Xicheng District, Beijing in 2023-2024 was the highest in the 15-24 year-old group, while it showed a decrease in the 0-4 year-old group. The etiology in 2018-2019 was mainly H1N1 and H3N2 subtypes, and in 2023-2024 it was mainly H3N2 subtype and influenza B, and the peak values of H1N1, H3N2 subtype and influenza B in 2023-2024 were all higher than those in 2018-2019. Conclusion During the epidemic period, non-medical interventions have changed the transmission mode, seasonal peak and subtype distribution of influenza virus. As the epidemic has eased, the pattern of influenza has gradually rebounded.
