Dr. Noel Brewer, a former ACIP member removed by Kennedy and a professor in the department of health behavior at the University of North Carolina Gillings School of Global Public Health, told ABC News that since the upheaval of the ACIP, vaccination has changed in the U.S. in a "fundamental" way and that the committee has "lost credibility."

The U.S. Centers for Disease Control and Prevention told physician groups, public health professionals and infectious disease experts that they will no longer be invited to help review vaccine data and develop recommendations,

Recently removed members of a Centers for Disease Control and Prevention (CDC) vaccine advisory panel warn that Health and Human Services (HHS) Secretary Robert F. Kennedy Jr.’s move to replace them shows he is “abandoning” rigorous scientific review and open deliberation.