Influenza A Surge Hits Argentina as Severe Respiratory Illness Spreads in El Salvador

Argentina’s National Epidemiological Bulletin reports an early and strong rise in influenza A(H3N2) cases, with the subtype accounting for 98% of infections and hospitalizations increasing sharply across several provinces. Health officials note a 45.6% positivity rate among tested outpatients and a surge in hospital admissions for respiratory complications.

In El Salvador, physicians describe a sharp increase in severe respiratory illnesses affecting young adults aged 25‑40, with symptoms reported as more intense than those of COVID‑19. The condition can progress to viral or secondary bacterial pneumonia if fever persists beyond five days, and many patients lack up‑to‑date vaccinations.