The U.S. is now averaging 300,000 new Covid cases a day. Former FDA Commissioner Dr. Mark McClellan discusses what the increase in cases means as we head into the new year and says that "we are going to see an unprecedented surge in cases."
Plus, how will the history books remember 2021? Sterling Professor of History at Yale University David Blight explains why the first month of 2021 will define the year.
Hosted by Laura Coates, in for Don Lemon.
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