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Dr. William Schaffner: ‘We’ve been playing catch up’ with coronavirus


Dr. William Schaffner, Professor of Preventive Medicine & Infectious Diseases at Vanderbilt University Medical Center, reacts to the news that COVID-19 was spreading in the U.S. earlier than previously known. Dr. Schaffner tells Lawrence O’Donnell that the virus is “way ahead of us” and increased testing is imperative to fight the spread.