Overview
- The national week 53 bulletin, with data through January 9, reports 6,374 confirmed cases and 24 deaths across 29 states, with more than 200 new infections added in the latest week.
- Chihuahua accounts for 4,486 confirmed infections and 21 of the 24 deaths, with single fatalities also recorded in Durango, Sonora and Jalisco.
- Health records show 91.2% of confirmed cases lacked documented vaccination, and none of those who died had a recorded immunization history.
- Authorities list 277 active cases indicating recent transmission, with most active infections in Jalisco and Chiapas, and 108 hospitalizations recorded during 2025.
- Mexico led the Americas in measles cases in 2025 after PAHO revoked the region’s elimination status in November, while separate data show 1,582 pertussis cases and 72 deaths last year, including 69 deaths in unvaccinated infants under one.