A federal judge in Massachusetts on Monday blocked Health Secretary Robert F. Kennedy Jr.’s recent overhaul of the nation’s childhood vaccine schedule — a major blow to his vaccine agenda.

A federal judge dealt a blow to the Trump administration’s public health agenda on Monday, blocking implementation of an advisory panel’s controversial changes to the childhood vaccine schedule and ca...

U.S. District Judge Brian Murphy in Boston sided with the American Academy of Pediatrics and other medical groups, which said ​health regulators had acted unlawfully to carry out Kennedy’s ​agenda of ...