Mexico measles outbreak exceeds 20,000 cases

Mexico's Ministry of Health has reported that measles infections have reached 20,350 cases since the outbreak was officially recognized in February 2025. A significant portion of these cases, totaling 13,736, occurred during 2026.

Jalisco has recorded the highest number of infections this year with 7,289 cases, followed by Mexico City, Chiapas, Durango, and Sonora. The outbreak has affected 528 municipalities across all 32 federal entities.

The virus has caused 50 deaths since February 2025, with Chihuahua reporting the highest mortality rate at 21 deaths. Health authorities noted that no deaths have been reported since September 29. The most affected demographic groups include children aged 1 to 4, followed by children aged 5 to 9 and adults aged 25 to 29. Officials emphasized that most infections occurred in individuals with incomplete vaccination schedules and have urged the population to complete their immunization protocols.