“Seasonal flu” is not predictable or stable
Published: 2026-02-17
The latest editorial, written by Davide Angeletti (Professor at the University of Gothenburg’s Department of Microbiology and Immunology), is entitled “Influenza A(H3N2) subclade K: when “seasonal” stops being predictable”. It discusses how the rapid rise of influenza A(H3N2) subclade K (also called J.2.4.1) is a reminder that “seasonal flu” is not predictable or stable. The emergence of new H3N2 subclades is normal, but current systems cannot adapt at the rates needed to ensure that society is sufficiently protected.
The editorial focuses in particular on how we can strategically approach the influenza drift. Davide Angeletti discusses which areas are key in improving preparedness against influenza, including increased vaccine uptake in high-risk groups, strengthening rapid testing along with early antiviral treatments, and modernising the influenza vaccine system.
If you are interested in writing an editorial for the portal, please contact us.