Recently fired members of a committee that advises the federal government on immunization safety lashed out at Health and Human Services Secretary Robert F. Kennedy Jr., saying that their terminations will limit access to vaccines and put American lives at risk.

U.S. Health Secretary Robert F. Kennedy Jr. on Monday removed every member of a scientific committee that advises the U.S. Centers for Disease Control and Prevention on how to use vaccines and pledged to replace them with his own picks.