On June 6, 2025, a leadership crisis at the Centers for Disease Control and Prevention (CDC) emerged amid new guidance on COVID-19 vaccines. The controversy involved key figures including Robert F. Kennedy Jr., Martin Makary, and Jay Bhattacharya. The new guidance indicated that the government would no longer endorse the COVID-19 vaccine for healthy children or pregnant women. The announcement was made by Health and Human Services Secretary Robert F. Kennedy Jr., who was flanked by Food and Drug Administration administrator Dr. Martin Makary and Dr. Jay Bhattacharya, director of the National Institutes of Health. The decision marks a significant shift in the government's approach to COVID-19 vaccination policies, particularly for vulnerable populations. The leadership crisis highlights ongoing debates within the public health community regarding vaccine efficacy and safety, especially for specific demographic groups. The new guidance is expected to have far-reaching implications for public health strategies and vaccine distribution programs. The CDC and other health agencies are likely to face increased scrutiny and public inquiries as they navigate this policy change.