How Has the Disappearance of Influenza B/Yamagata Altered the Proportion of Influenza A and B Cases? Early Findings From Post-COVID Pandemic Global Surveillance Data

IF 4.2 4区医学 Q1 INFECTIOUS DISEASES

Influenza and Other Respiratory Viruses Pub Date : 2025-07-07 DOI:10.1111/irv.70138

Marco Del Riccio, Jojanneke van Summeren, Saverio Caini, Koos van der Velden, Aura Timen

引用次数: 0

Abstract

We studied worldwide influenza surveillance data (2022–2024), particularly in 145 countries and 260 country-seasons: influenza A represented 77.2% of identified cases, rising from 72.5% prepandemic, with A-dominated seasons increasing from 84.6% to 92.3%. During the same period, B/Yamagata was not detected and uncharacterized B cases dropped from 21.0% to 7.5%, possibly reflecting improved surveillance efforts. These results highlight postpandemic changes in influenza circulation and have important implications for vaccine composition, virus monitoring, and global prevention strategies.

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乙型流感/山形流感的消失如何改变甲型和乙型流感病例的比例？covid大流行后全球监测数据的早期发现

我们研究了全球流感监测数据（2022-2024年），特别是145个国家和260个国家的流感季节：甲型流感占确诊病例的77.2%，从大流行前的72.5%上升到92.3%，甲型流感占主导季节从84.6%上升到92.3%。在同一时期，B/Yamagata未被发现，无特征的B病例从21.0%下降到7.5%，这可能反映了监测工作的改善。这些结果突出了流感大流行后流感传播的变化，并对疫苗组成、病毒监测和全球预防战略具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Influenza and Other Respiratory Viruses 医学-病毒学

CiteScore

7.20

自引率

4.50%

发文量

120

审稿时长

6-12 weeks

期刊介绍： Influenza and Other Respiratory Viruses is the official journal of the International Society of Influenza and Other Respiratory Virus Diseases - an independent scientific professional society - dedicated to promoting the prevention, detection, treatment, and control of influenza and other respiratory virus diseases. Influenza and Other Respiratory Viruses is an Open Access journal. Copyright on any research article published by Influenza and Other Respiratory Viruses is retained by the author(s). Authors grant Wiley a license to publish the article and identify itself as the original publisher. Authors also grant any third party the right to use the article freely as long as its integrity is maintained and its original authors, citation details and publisher are identified.