Summary
The U.S. is experiencing its worst year for measles in over 30 years, with 1,288 cases reported nationwide and six months still left in 2025. The outbreak began in communities in West Texas and has resulted in three deaths and dozens of hospitalizations. The national vaccination rate has dropped below the level needed to prevent outbreaks, causing concern among public health experts.
Key Facts
- The U.S. has 1,288 measles cases reported so far in 2025.
- This marks the highest number of cases since 2019.
- Measles outbreaks started in undervaccinated communities in West Texas.
- Three people have died, including two children in Texas and one adult in New Mexico.
- Vaccination rates have dropped below the 95% needed to prevent outbreaks.
- The measles, mumps, and rubella (MMR) vaccine is 97% effective after two doses.
- 92.7% of U.S. kindergarteners had the MMR vaccine in the 2023-2024 school year.
- Key areas with outbreaks include communities with historically low vaccination rates, such as some Mennonite groups.
