The Centers for Disease Control and Prevention has historically been the pinnacle of U.S. public health. The agency has been a leading voice for evidence-backed health guidance and a sentinel for deadly disease outbreaks for decades. But over the past year, Secretary of Health and Human Services Robert F. Kennedy, Jr., and the Trump administration have stripped the CDC of funding, programs, staff and agency leaders.

Thirty-eight routinely updated datasets, most related to vaccines, have been paused since at least the spring of 2025.