“Dave Weldon is anti-vaccine, anti-woman and anti-science. He was not qualified to serve as CDC director,” said Colorado Rep. Diana DeGette, the top Democrat on the Energy and Commerce Health Subcommittee in the House.

Whether the withdrawal of Weldon’s nomination is a win for vaccines depends on who Trump nominates next and how much influence Kennedy exerts as the CDC director’s boss.

The White House withdrew President Donald Trump's nomination of former Republican congressman and vaccine critic Dave Weldon to serve as director of the U.S. Centers for Disease Control and Prevention,