Doctor on coronavirus: 'I think we have between 50,000 and half a million cases right now walking around in the United States'

The impact of the coronavirus is continuing to escalate, and Johns Hopkins University Professor of Public Health Dr. Marty Makary says, "I think we have between 50,000 and half a million cases right now walking around in the United States". He joins Yahoo Finance's On the Move panel to discuss.

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