Measles outbreaks are currently occurring in multiple regions worldwide, with significant activity reported in the United States, the Americas, and several countries globally.
United States
- As of May 15, 2025, there have been 1,024 confirmed measles cases reported in 31 U.S. jurisdictions, including states such as Texas, New Mexico, California, Ohio, and others
- There are 14 outbreaks in 2025, with the largest outbreak centered in West Texas and New Mexico, particularly in Gaines County, Texas, and Lea County, New Mexico. This outbreak has affected over 440 individuals, with clusters also reported in Oklahoma and Kansas
- Texas has seen the most intense spread, with over 400 cases, including hospitalizations and at least one death, largely among unvaccinated individuals. The outbreak in Texas is expected to persist for about a year
Americas Region
- The World Health Organization reports 2,318 confirmed measles cases in six countries in the Americas as of April 18, 2025, including Belize, Brazil, Canada, Mexico, and others
- Canada has experienced a large multi-jurisdictional outbreak with 1,069 confirmed and probable cases in seven provinces, mainly among unvaccinated or under-vaccinated communities
- Mexico reported 421 confirmed cases across several states, with ongoing investigations into transmission chains
- Belize reported its first cases since 1991, linked to travel to Mexico
Global
- The CDC lists the top 10 countries with the highest measles cases between October 2024 and April 2025, including Yemen (10,487 cases), Pakistan (8,895), India (8,397), Afghanistan (6,255), Ethiopia (6,188), Kyrgyzstan (5,849), Romania (5,583), Thailand (3,675), Indonesia (3,322), and Nigeria (2,482)
- Europe has also seen a resurgence, with the highest number of measles cases in over 25 years reported in 2023 and 2024 due to declines in vaccination coverage during the COVID-19 pandemic
Summary
Measles outbreaks are active in:
- Multiple U.S. states, especially Texas, New Mexico, Oklahoma, Kansas, and others.
- Countries in the Americas including Canada, Mexico, Brazil, and Belize.
- Several countries worldwide with large outbreaks in Yemen, Pakistan, India, Afghanistan, Ethiopia, and others.
These outbreaks are primarily driven by under-vaccinated populations and international travel-related importations
