Alaska Sen. Lisa Murkowski (R) and Maine Sen. Susan Collins (R) expressed their concerns over Dave Weldon’s nomination to head the Centers for Disease Control (CDC) prior to senior Trump

Dave Weldon is likely to be questioned about measles infections, a plan to study a debunked link between vaccines and autism, and the ongoing bird flu outbreak.

Minutes before his confirmation hearing, the White House pulled David Weldon's nomination to lead the Centers for Disease Control and Prevention.

The White House has withdrawn its nomination of Dr. Dave Weldon to serve as the director of the US Centers for Disease Control and Prevention, two Trump administration official familiar with the decision told CNN.

Senators told the Trump administration that Dr. Dave Weldon didn’t have the votes to be confirmed, though he had believed his confirmation hearing Thursday would proceed before it was canceled.