Meet Ralph Lee Abraham, the CDC’s new second-in-command who believes the Affordable Care Act should be repealed and called vaccines ‘dangerous’

Sen. Bill Cassidy of Louisiana, the Republican chairman of the Senate Health Committee and a physician, has clashed publicly with Abraham over vaccine policy. In February, Cassidy criticized Abraham’s decision to halt mass vaccination campaigns, saying, “Removing these resources from parents is not a stand for parents’ rights. It is making health care less convenient and available for Louisianans who are very busy.”

​For this story, Fortune used generative AI to help with an initial draft. An editor verified the accuracy of the information before publishing.