Robert F. Kennedy Jr. said that he did not promise Sen. Bill Cassidy (R-LA) that he would not change the personnel of a key CDC vaccine panel.

Sen. Bill Cassidy called for a meeting of a Centers for Disease Control and Prevention vaccine advisory committee set for this week to be postponed, citing a lack of experience among its new appointees.

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