Multiple Officials, Including Joe Biden, May Have Been Exposed To Trump

With three people in the White House -- President Trump, first lady Melania Trump, and top aide Hope Hicks -- now testing positive for coronavirus, questions are arising as to how many people within the administration may have been exposed to the virus.

The administration needs to "trace their contacts and start quarantining people who have been in close contact with somebody," said CNN's Chief Medical Correspondent Sanjay Gupta. "And that's going to be a very important policy, here, within the West Wing."