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Peru Confirms Two Pediatric H3N2 Subclade K Cases as Region Ramps Up Flu Precautions

Health authorities classify the strain as seasonal influenza, urging vaccination for vulnerable groups.

Influenza
Carlincatura del martes 16 de diciembre de 2025
US-HEALTH-SWINE FLU - This 2009 Center For Disease Control and Prevention handout image taken through a microscope, shows a negative-stained image of the swine flu virus. Cases of swine fever were reported in all corners of the globe April 28, 2009 as authorities were divided in their efforts to prevent the outbreak of the deadly virus from becoming a worldwide pandemic. After the death toll in the outbreak's epicentre Mexico climbed to 152 and the number known to be infected in the United States rose to 64, authorities in Europe, the Middle East and Asia all reported cases on their patch. While the United Nations' World Health Organization (WHO) said it was still not inevitable that the outbreak would turn into a pandemic, other scientists said it may have already passed that point. AFP PHOTO/CENTER FOR DISEASE CONTROL AND PREVENTION/C. S. Goldsmith and A. Balish/HANDOUT/RESTRICTED TO EDITORIAL USE =GETTY OUT= eeuu lucha contra gripe porcina epidemia vista imagen virus bajo microscopio virus H1N1 imagen microscopica
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Overview

  • Peru’s Health Ministry confirmed two H3N2 subclade K infections in children in Lima, both treated in hospital and discharged in good condition.
  • The ministry issued a national epidemiological alert, intensifying surveillance and monitoring at health facilities and travel hubs ahead of year‑end gatherings.
  • CDC Peru stated the risk of an epidemic remains low and ruled out a pandemic scenario, recommending masks for symptomatic people, hand hygiene and ventilation.
  • Mexico’s INER reported a first subclade K case managed with standard antivirals, and the health secretary said the seasonal vaccine covers H3N2 and oseltamivir supplies are in place.
  • Vaccination campaigns prioritize children under five, adults 60 and older, pregnant people, those with chronic conditions and health workers, with media citing preliminary protection against hospitalization of about 70–75% in children and 30–40% in adults.