Overview
- Peru’s health ministry reported two influenza A(H3N2) cases in Lima in minors, advised masks in health facilities and for symptomatic people, and kept national surveillance on high alert.
- WHO and international monitors note an unusually early surge of H3N2 subclade K across the Northern Hemisphere, with spread documented in more than 30 countries in recent months.
- Mexico confirmed one local H3N2 K case that recovered with outpatient antivirals, and the health secretary said the current seasonal vaccine includes H3N2 and supply is sufficient.
- Peru’s EsSalud and other agencies urged staying home when ill, avoiding unnecessary hospital visits, improving ventilation, handwashing supported by reliable water service, and using the 107 helpline for guidance.
- Demand for masks and flu shots has risen in Peru, vaccination continues for priority groups, and Mexico’s winter campaign runs through April 3, 2026, as officials stress early antivirals and warn antibiotics do not treat influenza.