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Amanpour & Co.
Do Masks Provide as Much Protection as We Think?
A recent internal document from the CDC reveals that it's as contagious as chickenpox and it carries an increased risk of severe illness and hospitalization. Michael Osterholm is the Director for Infectious Disease, Research and Policy at the University of Minnesota. He speaks with our Walter Isaacson about how the U.S. should respond and what can be learned from other countries.
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