Kennedy Jr. in the country's top health position, use of a long-approved vaccine against measles, mumps, rubella, and varicella/chickenpox (MMRV) as well as flu shots that include the preservative thimerosal will now be reevaluated,

Public backlash is growing against the nation’s top health official RFK Jr., as more Americans stand up to the Trump administration. Dr. Fiona Havers joins MSNBC’s Jason Johnson to discuss. (Subscribe

Health Secretary Robert F. Kennedy Jr. ousted all 17 members of a panel that advises the CDC on the safety, efficacy and clinical needs of vaccines.