US measles cases pass 2,000 as outbreak nears worst in decades

Outbreak driven by falling vaccination and misinformation as federal public health cuts hamper state response

The US has recorded more than 2,000 confirmed measles cases so far this year - near the total of 2,228 recorded in all of 2025, and on track to become the worst year for measles in decades as states struggle with the loss of federal funding for public health.

The virus continues to spread in unvaccinated and under-vaccinated communities, including among babies too young to be vaccinated, and it reveals the depths of the twin crises of misinformation and public health in the US.