Immunizations “are not all good or bad,” says the chair of the vaccine committee that has been overhauled by Health and Human Services Secretary Robert F. Kennedy Jr.

The head of a recently restructured vaccine advisory panel is pushing back against black-and-white thinking on immunizations, suggesting they shouldn’t be framed as universally "good" or "bad." The comments come after Health and Human Services Secretary Robert F. Kennedy Jr. revamped the committee—a move likely tied to his history of vaccine skepticism.