H3N2 Flu

Following initial detections in neighboring South American countries, the H3N2 influenza A K subclade has now reached Argentina, with confirmed cases in Buenos Aires, Santa Cruz, and Neuquén, including hospitalizations for pneumonia. Authorities are advancing the 2026 flu vaccination campaign for at-risk groups, while current vaccines offer partial protection against severe illness, bolstered by antivirals like oseltamivir.