U.S. President Donald Trump's nominee for director of the CDC was pulled into political contention over U.S. vaccine policy on Wednesday, describing the medications as "life-saving" and telling a Senate panel that she has not seen evidence linking vaccines and autism.

Former CDC vaccine Expert Dr. Fiona Havers railed against Health and Human Services Secretary Robert F. Kennedy Jr.’s decision for a private citizen to come and give a presentation to his vaccine panel.

The Trump administration continued to reshape U.S. health policy in recent days with several moves that could change what vaccines people can get to protect themselves from common illnesses. Some of the changes are immediate,