The U.S. Department of Health and Human Services (HHS), under Secretary Robert F. Kennedy Jr., has reconstituted the Centers for Disease Control and Prevention's (CDC) vaccine advisory committee by dismissing all previous members and appointing new, handpicked advisers. This new vaccine advisory panel convened for the first time in late June 2025 and announced plans to review the childhood and adolescent immunization schedule, including the use of older vaccines. These inquiries into established vaccination practices have raised concerns among pediatricians. Additionally, there are reports that the U.S. Preventative Services Task Force fears similar dismissal and replacement by Kennedy. Beyond vaccines, HHS has launched a reform of the organ transplant system following a probe that uncovered premature organ retrieval attempts on patients showing signs of life, prompting threats to close a major procurement body. Kennedy's department has also faced criticism for cutting medical research funding and recruiting from fringe medical journals, which some experts warn jeopardizes public health goals. Prominent scientists have voiced alarm over these developments, highlighting potential impacts on organ donation willingness and broader medical research efforts.