Overview
- National surveillance, which reported Tuesday’s 268 new notifications, puts confirmed and probable cases at 837 with 93% in the northwest.
- Salta confirms 1,172 infections after a 44.8% week‑to‑week rise, with Salvador Mazza and the San Martín department identified as the main hotspots.
- Tucumán counts 231 cases and intensifies house‑to‑house block operations in affected neighborhoods, with active checks for people with recent fevers.
- Territorial spread continues as Catamarca confirms its first local transmission with 22 cases, alongside detections in Santiago del Estero, Buenos Aires Province, CABA and Córdoba.
- Health officials note rare severe illness with about 11% hospitalized and isolated reports of encephalitis and one death, and they urge qRT‑PCR or ELISA testing in the first six days plus strict mosquito control at home.