The United States is facing its worst measles outbreak since the disease was declared eliminated in 2000, with 1,563 cases reported this year, according to the Centers for Disease Control and Prevention (CDC).
New outbreaks in Ohio, Minnesota, South Carolina, Arizona, and Utah continue to drive weekly surges. Health experts attribute the resurgence to declining vaccination rates, with measles-mumps-rubella (MMR) coverage falling to 92.5%, below the 95% threshold needed for herd immunity.
US health official calls for separating measles combination shots https://t.co/gQAzWFJ1Lg https://t.co/gQAzWFJ1Lg
— Reuters (@Reuters) October 7, 2025
The outbreak along the Arizona-Utah border has already produced more than 90 cases, while over 150 unvaccinated schoolchildren in South Carolina are under quarantine.
Experts warn that misinformation and parental skepticism toward vaccines have fueled the spread.
Public health officials say the situation has strained local departments already affected by federal budget cuts and the ongoing government shutdown. CDC officials continue limited operations to track infections and advise local agencies.
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