Overview
- The case in Mexico was confirmed by the National Institute of Respiratory Diseases, and the patient recovered after outpatient antiviral treatment, according to the Health Ministry.
- OPS/WHO advisories note rising influenza A(H3N2) activity in North America with progressive K subclade circulation in Europe and Asia, prompting countries to update preparedness plans.
- Health authorities state the K subclade shows clinical features similar to seasonal influenza, with no evidence to date of higher severity, and they discourage public alarm.
- Mexico’s epidemiological system (SINAVE) remains on active surveillance, with guidance for early care, standard antivirals when indicated, masking with symptoms, and a push to vaccinate priority groups.
- Peru reports no detection of the K subclade in South America, maintains a low-to-moderate risk assessment, and has intensified surveillance and vaccination efforts through MINSA and regional health directorates.