Influenza incidence, lineages, and vaccine effectiveness estimates in Lima, Peru, 2023

Characterisation of influenza viruses in the southern hemisphere can guide local response and provide insights to northern hemisphere jurisdictions about their upcoming influenza season.1,2 Here, we present the information on 2023 end of influenza season in the southern hemisphere about influenza lineages, incidence of medically attended, laboratory-confirmed influenza cases, and influenza vaccine effectiveness (VE) against the antigen from surveillance clinics and a hospital in San Juan de Lurigancho and San Martin de Porres, the two most populated districts of Peru.