Peter Marks, the Director of the Center for Biologics Evaluation and Research at the U.S. Food and Drug Administration (FDA), has resigned from his position. Marks stated in his resignation letter that undermining trust in vaccines is irresponsible. According to The New York Times, Marks emphasized in his resignation letter at FDA that undermining trust in vaccines, a long-standing issue, is irresponsible and referred to Health and Human Services Secretary Robert F. Kennedy Jr.’s negative stance on vaccines. Marks highlighted the dangers this attitude poses to public health, emphasizing that it creates an obvious threat to the health, safety, and security of citizens. In light of measles outbreaks among unvaccinated individuals in Texas and other states, he touched on the lethal consequences of the disease. Marks pointed out that measles, which had caused the deaths of over 100,000 unvaccinated children in Africa and Asia by 2024, did not pose a threat in the U.S. thanks to the widespread availability of vaccines. Marks expressed willingness to address Kennedy’s concerns about vaccine safety and transparency through various means such as public meetings but was turned down. He said in an interview, “I did everything in my power to work with this administration to rebuild trust in vaccines.” Marks stated that leaving the FDA meant a burden was lifted, noting that he felt the environment was becoming increasingly dangerous. According to someone familiar with the matter, Marks was told to either resign or be fired after being summoned to the Department of Health and Human Services. A ministry spokesperson stated that Marks had no place at FDA if he was not transparent.