Washington, D.C., 12 December 2025 (PAHO/WHO) – The Pan American Health Organization (PAHO) has issued a briefing note, updating countries on the increasing circulation of the influenza A(H3N2) subclade K (J.2.4.1) virus in several regions of…
PAHO calls for strengthened vaccination and surveillance in the Americas amid a global increase of influenza A(H3N2) subclade K – PAHO/WHO
