The C.D.C.’s Vaccine Chief on Why Quitting Was His Only Option

Over the past 24 hours, the U.S. Centers for Disease Control and Prevention has been plunged into turmoil. Health Secretary Robert F. Kennedy Jr. tried to fire the agency’s director, Susan Monarez, igniting a standoff that prompted three other senior officials to resign. One of those officials, Dr. Demetre Daskalakis, explains why he chose to take a stand.