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2mo ago

Argentina and Peru Confirm H3N2 Subclade K as Health Authorities Push Early Treatment and Vaccination

Peru has moved up influenza vaccine deliveries to February to shield priority groups.

Switzerland Roche Tamiflu - Undated photo provided by Swiss company Roche on Tuesday, April 28, 2009 shows blister strips containing Tamiflu capsules in the Roche packaging facility in Kaiseraugst, Switzerland. Swiss drug company Roche Holding AG said WHO has enough of the firm's anti-flu Tamiflu stockpiled to treat up to 5 million people who come down with the new strain of swine flu. (AP Photo/Roche) ** MANDATORY CREDIT EDITORIAL l USE ONLY ** kaiseraugst suiza laboratorio roche blister pastilla tamiflu epidemia de gripe porcina medicacion
Minsa anuncia llegada anticipada de nuevas vacunas contra la influenza para febrero de 2026
El titular del sector explicó que los casos identificados corresponden al subclado K del virus influenza H3N2 y han sido confirmados mediante pruebas oficiales. (Fuente: CDC Perú)
El Ministerio de Salud lanzo recomendaciones ante el broted e la Gripe A H3N2.

Overview

  • Argentina’s reference lab confirmed three H3N2 subclade K cases—two adolescents in Santa Cruz (one with COVID-19 co-detection) and a hospitalized 5-year-old in Buenos Aires—with genomic sequencing and no reported complications.
  • Peru’s health ministry confirmed six H3N2 subclade K cases and reported plans to start 2026 influenza vaccinations with doses arriving in the first half of February.
  • Argentina’s latest epidemiological bulletin advises oseltamivir for high-risk and severe cases, emphasizing initiation within 48 hours when possible, permitting later use in severe illness, and urging clinicians not to wait for lab confirmation.
  • Officials caution against indiscriminate antiviral use due to resistance risk, noting Malbrán found no rise in oseltamivir-resistant strains in 2024.
  • Public guidance reiterates vaccination for priority groups and basic respiratory precautions such as hand hygiene, ventilation, and mask use in crowded settings or when symptomatic, as surveillance tracks the globally expanding H3N2 K lineage.