As of February 18, 2026, measles transmission in Mexico is primarily concentrated in six states: Jalisco, Chiapas, Mexico City, State of Mexico, Michoacán, and Durango. These regions are reported to have experienced significant recent growth in cases, while Chihuahua, despite having the highest cumulative total of cases, has shown a decline in new infections. The current public health crisis has escalated since the epidemic alert was issued a year ago, highlighting ongoing challenges in managing vaccine-preventable diseases in the country.

The latest epidemiological report from the General Directorate of Epidemiology of the Secretariat of Health details that Mexico has accumulated a total of 10,199 confirmed measles cases, alongside 27,078 probable cases under investigation, and 31 deaths associated with the outbreak during the 2025-2026 period. The alarming rise in cases places significant strain on health resources and underscores the need for intensified vaccination efforts to control the outbreak. Additionally, the variation in case rates by state indicates a pressing need for targeted public health strategies in the most affected areas.

Jalisco has emerged as the most concerning area regarding measles transmission, increasing from 664 confirmed cases in 2025 to an alarming 2,229 cases in 2026. This significant surge in cases emphasizes the urgent requirement for public health measures to encourage vaccination, raise awareness about the disease, and monitor the spread effectively. The observed trends reflect potential weaknesses in the public health response, as well as the importance of community engagement and sustained health education to mitigate future outbreaks of measles and other vaccine-preventable diseases in Mexico.