Doctor was called a liar after sharing battle with Covid-19

28-year-old Dr. David Burkard shares a cautionary tale after his battle with Covid-19 left him struggling to breathe. CNN's Sara Sidner has the details.

source https://www.cnn.com/videos/us/2020/11/19/young-doctor-coronavirus-battle-sidner-dnt-newday-vpx.cnn