Overview
- Health authorities report the outbreak remains concentrated in Puno with roughly 670 confirmed cases there and 713 confirmed nationwide through epidemiological week 25, with San Román accounting for the largest cluster.
- The Ministry of Health has declared a sanitary emergency and deployed rapid vaccination measures including free pop-up sites in Lima Norte and a large 'barrido' in Arequipa that aims to immunize about 240,000 people aged 6 months to 29 years.
- Arequipa has moved from imported cases to community transmission, prompting door‑to‑door and campus brigades and use of a 'dose zero' for infants 6–11 months during the emergency.
- Regions are stepping up surveillance and contact tracing after Huancavelica confirmed its first imported case in a 35‑year‑old who worked in Puno and Spanish health authorities reported a four‑case cluster in Tenerife linked to an unvaccinated English child.
- Officials warn that gaps in routine coverage mean herd immunity is not secure, urge people born after 1978 or without two documented doses to check vaccination status, and note that post‑exposure vaccination within 72 hours can prevent or reduce illness.