Kennedy Jr.'s installation atop the nation’s health bureaucracy. The Advisory Committee on Immunization Practices (ACIP) normally holds multiple meetings a year, reviews scientific data and makes recommendations to the director of the Centers for Disease Control.

A CDC vaccine advisory committee meeting scheduled for next week has been postponed. It was the first vaccine meeting since health secretary Robert F. Kennedy Jr. was sworn in.

Kennedy, who has called for public health agencies to focus on chronic diseases, was sworn in after a close Senate vote.