Overview
- ANLIS–Malbrán confirmed three influenza A (H3N2) subclade K cases—two adolescents in Santa Cruz and one child in Buenos Aires—through the national sentinel network and genomic sequencing at the reference laboratory.
- Authorities reported that all patients recovered without complications and that national respiratory surveillance remains within expected seasonal levels.
- The variant, also labeled J.2.4.1, carries hemagglutinin mutations linked to increased spread, and current evidence does not indicate greater clinical severity than prior H3N2 strains.
- The Health Ministry urged standard precautions—hand hygiene, cough etiquette, ventilation, surface cleaning, and medical consultation for symptoms—and reiterated free annual vaccination for priority groups, noting preliminary protection against hospitalization of roughly 70–75% in children and 30–40% in adults.
- Provinces and neighbors moved to reinforce readiness, with Catamarca strengthening surveillance and Paraguay issuing an epidemiological alert tied to traveler-associated cases, in line with regional monitoring calls.