Jojanneke van Summeren
Publicatie
Datum
07-07-2025
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.
Del Riccio, M., Summeren, J. van, Caini, S., Velden, K. van der, Timen, A. 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. Influenza and Other Respiratory Viruses: 2025, 19(7), art. nr. e70138.
Lees online
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.
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.
Gegevensverzameling