Overview
- Mexico has recorded 5,860 confirmed measles cases and 24 deaths as of the federal cut‑off on December 19, with active cases in 29 states and 196 municipalities.
- Chihuahua remains the national epicenter with 4,473 cases and 21 deaths, followed by Jalisco with 462 and Guerrero with 227, while Mexico City has reported 22.
- Chiapas reported a rapid increase from 45 to 64 confirmed cases across at least 15 municipalities in the regions Metropolitana, Centro and Altos, including Tuxtla Gutiérrez and San Cristóbal de las Casas.
- The Chiapas Health Secretariat ordered the suspension or reprogramming of posadas, fairs, parades, sports events and other large gatherings from December 21 to March 20 under authorities granted by national health law and the International Health Regulations, warning municipalities of legal consequences for noncompliance.
- Authorities intensified SRP vaccination, reporting 11,494 doses administered with mobile and high‑flow sites in cities such as Tapachula and San Cristóbal, where local clinics report daily turnouts exceeding 200 people.