A U.S. government scientist who oversees the team responsible for collecting data on COVID-19 and RSV hospitalizations used to shape national vaccine policy has resigned, citing concerns over how such data would be used by the Trump administration.

Fiona Havers, who oversees CDC respiratory virus data, told colleagues she no longer had confidence the data would be used objectively to set vaccine policy.

Kennedy Jr. poses a direct threat to American health. Far from restoring trust—Kennedy’s stated aim—this action dismantles a process that was a model for the world, built over six decades, and will create confusion for doctors,