Public health experts, physicians, and scientists responded with fury and disgust to the news that Donald Trump will nominate anti-vaccine activist Robert F. Kennedy Jr. to be the secretary of Health and Human Services. If Kennedy—who has also promoted dangerous and ludicrous ideas about fluoride, 5G technology, and the causes of HIV/AIDS, among innumerable other pseudoscientific claims—assumes the position, “the damage he could do is near infinite,” warns Dr.