A senior scientist at the U.S. Centers for Disease Control and Prevention (CDC) has resigned, warning that changes in leadership may weaken the country’s vaccine program. Dr. Fiona Havers, who led the CDC’s tracking of hospitalizations from COVID-19 and RSV (respiratory syncytial virus),

Recently fired members of a committee that advises the federal government on immunization safety lashed out at Health and Human Services Secretary Robert F. Kennedy Jr., saying that their terminations will limit access to vaccines and put American lives at risk.

Some public health experts have expressed optimism that RFK Jr.'s picks to lead the Advisory Committee on Immunization Practices might decrease vaccine hesitancy.