Track measles outbreak cases across the U.S
With more than 500 cases, 2025 is already the third-most active year for measles since 2000, the year the U.S. officially eliminated the disease.
Most cases this year are in Texas, which accounts for 3 out of 4 reported infections.
“Elimination” means that the disease has not spread continuously for at least 12 months. And while sporadic outbreaks have occurred since 2000, recent case counts are nothing compared to the 27,000 cases reported in 1990, or the 450,000 cases reported in 1964.
The measles vaccine was introduced in 1963, which marked a turning point for the contagious disease, which used to kill thousands every year.
