A resurfaced video of RFK Jr. from 2023 shows him falsely linking the polio vaccine to other diseases. Ari Melber fact checks the heath secretary's claims.

Kennedy gutted a key vaccine advisory panel. Now, physicians are figuring out how they can continue to share evidence-based guidance to keep patients healthy.

Critics fear that U.S. Department of Health and Human Services chief RFK, Jr., known for his antivaccine views, has picked a crucial CDC committee that will be a “disaster for public health”