Concerns over Thanksgiving gatherings continue as U.S. marks deadliest day in pandemic in months

The U.S. reported the deadliest day in the coronavirus pandemic since early May with more than 2,200 deaths. CBS News medical contributor Dr. David Agus joins "CBS This Morning" to discuss Thanksgiving concerns as millions of Americans travel for the holiday. He also comments on the AstraZeneca-Oxford coronavirus vaccine candidate.

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