CDC (Measles Cases and Outbreaks)

The CDC's Measles Cases and Outbreaks page is a federal disease-surveillance resource that tracks confirmed case counts and outbreak data across the United States. It is maintained by the Centers for Disease Control and Prevention, a taxpayer-funded agency within the Department of Health and Human Services. Since January 2025, the broader CDC has operated under significant pressure from the Trump administration and HHS Secretary Robert F. Kennedy Jr., including suppression of some vaccination-related guidance, though the data page itself has continued reporting factual case counts reflecting a large ongoing outbreak.