CDC data removal under Trump

Starting in January 2025, at the beginning of President Donald Trump's second term, the United States — Centers for Disease Control and Prevention (CDC) and other federal agencies removed at least 200 CDC datasets and over 8,000 webpages. Although many resources were later restored, the removals caused significant disruptions. A January 2026 study found that nearly half (46%) of monthly updated CDC data had unexplained pauses, with 90% related to vaccinations and respiratory viruses like influenza, COVID-19, and RSV. Data on HIV incidence and prevalence also stopped updating. Widespread staff cuts across the Department of Health and Human Services (HHS) crippled data collection and dissemination. Key teams, such as those managing the Pregnancy Risk Assessment and Monitoring System, the National Health and Nutrition Examination Survey, and the National Death Index, were terminated, though some terminations were later reversed. The loss of trust in the CDC's data handling threatens future public health collaboration.