Influenza Other Respir Viruses
. 2025 Sep;19(9):e70151.
doi: 10.1111/irv.70151. Changing Epidemiological Pattern and Higher Disease Burden of Influenza in China, 2022 to 2025
Hairu Yu 1 , Qing Wang 1 , Boer Qi 1 , Jie Qian 1 , Weizhong Yang 1 , Luzhao Feng 1
Affiliations
Influenza activity peaks in southern (59.62%) and northern China (57.60%) during the 2022/2023 season reached the highest levels in the past 10 years. The 2023/2024 season witnessed a longer duration of the winter-spring epidemic weeks and a higher disease burden compared with previous high-epidemic years. The A(H3N2), A(H1N1)pdm09, and B/Victoria lineages alternated among the predominant circulating strains from the 2022/2023 season to the 2024/2025 season. After the 2022/2023 and 2023/2024 seasons of disruption and fluctuation, influenza in the 2024/2025 season has reverted to its previous epidemic pattern.
Keywords: disease burden; epidemiological pattern; influenza.
. 2025 Sep;19(9):e70151.
doi: 10.1111/irv.70151. Changing Epidemiological Pattern and Higher Disease Burden of Influenza in China, 2022 to 2025
Hairu Yu 1 , Qing Wang 1 , Boer Qi 1 , Jie Qian 1 , Weizhong Yang 1 , Luzhao Feng 1
Affiliations
- PMID: 40884275
- PMCID: PMC12397873
- DOI: 10.1111/irv.70151
Influenza activity peaks in southern (59.62%) and northern China (57.60%) during the 2022/2023 season reached the highest levels in the past 10 years. The 2023/2024 season witnessed a longer duration of the winter-spring epidemic weeks and a higher disease burden compared with previous high-epidemic years. The A(H3N2), A(H1N1)pdm09, and B/Victoria lineages alternated among the predominant circulating strains from the 2022/2023 season to the 2024/2025 season. After the 2022/2023 and 2023/2024 seasons of disruption and fluctuation, influenza in the 2024/2025 season has reverted to its previous epidemic pattern.
Keywords: disease burden; epidemiological pattern; influenza.