Dr. Amesh Adalja, a senior scholar at Johns Hopkins University, says Health and Human Services Secretary Robert F. Kennedy Jr.’s action makes the U.S. “less prepared for infectious disease threats.” ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7