GOP Sen. Bill Cassidy said a vaccine advisory panel should delay its next meeting and raised questions about potential bias of RFK-appointed members.

Health and Human Services Secretary Robert F. Kennedy Jr. on Tuesday denied agreeing not to make changes to a key Centers for Disease Control and Prevention vaccine safety panel, which has caused a significant stir in the public health community.

After weeks of staying mostly quiet about Health Secretary Robert F. Kennedy's remaking an influential committee that advises the federal government on vaccinations, U.S. Sen. Bill Cassidy Monday