Measles Outbreak Continues at the Mexico Border

Mexico's Ministry of Health recently reported a significant increase in measles cases in 2026, with more than 7,400 confirmed infections recorded since the beginning of the year.

According to the epidemiological update on March 19, 2026, Mexico has reported 7,403 confirmed measles cases this year alone.

This rise in cases marks a sharp escalation in the ongoing outbreak that began in 2025. When including cases from late 2025, the cumulative total since the outbreak started exceeds 13,855 confirmed measles cases and 32 related fatalities across all 32 states and 437 municipalities.

The state most affected by the outbreak, Jalisco, a western Mexican state, has recorded 4,358 confirmed cases, accounting for the majority of this year's infections.

In response to the outbreak, health authorities have intensified vaccination efforts. From early 2025 through mid-February 2026, over 13.3 million doses of the measles vaccine have been administered nationwide.

Throughout Mexico, vaccination campaigns are ongoing, particularly in high-risk areas with low vaccination coverage, to help curb further spread.

As of March 20, 2026, Mexican officials are urging the public to ensure their vaccinations are up to date, particularly for children and travelers. This recommendation comes as the country prepares for large-scale events in the coming years.

To inform travelers about this ongoing health risk when departing from the United States, the CDC has issued a Level 1 - Practice Usual Precautions, Global Measles Travel Health Notice for Mexico.

In the U.S., measles vaccination services are offered at most travel vaccine clinics and pharmacies.