Measles, eradicated in the U.S. since 2000, is now circulating nationwide after more than a year of continuous transmission. As of March 2026, 1,300 cases have been confirmed - surpassing 2025’s record high.
Outbreaks began in Texas in January 2025, followed by ongoing clusters in Utah, Arizona, and South Carolina. The disease has spread to 30 states this year, with hospitalizations rising and three deaths reported in 2025 - the most in 25 years.
Despite 90% national MMR vaccine coverage, local rates in some areas fall below 60%, undermining herd immunity. Public health experts warn that low vaccination rates signal deeper systemic failures in disease preparedness.
Complications include pneumonia, encephalitis, and long-term immune damage. A rare but fatal condition known as SSPE has killed a child in Los Angeles years after an early infection.
Economic costs are staggering: one 2018-2019 Washington state outbreak cost $3.2 million. A sustained 1% drop in vaccination could cost billions.
The resurgence is not just about measles - it reflects weakened public confidence in the CDC and broader vulnerability to future pandemics.
