Coronavirus fact vs. fiction: Leading virologist on what Americans should know
03:22
Joseph Fair, a virologist and epidemiologist who has worked fighting Ebola in Africa and is now an NBC News science contributor, tells Lester Holt that facts are our best defense against the coronavirus outbreak. They set out in New York City to discuss what Americans should do to protect themselves on public transit, at home and in the workplace.March 6, 2020
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