Opening the first meeting of Kennedy’s handpicked seven-member panel, committee chairman Martin Kulldorff said he was appointing a work group to evaluate the “cumulative effect” of the children’s vaccine schedule — the list of immunizations given at different times throughout childhood.

U.S. Health Secretary Robert F. Kennedy Jr. fired all 17 members of a national vaccine advisory board, naming eight new members of his choosing and upending the process for recommending shots for the American public.