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CDC says new science caused change in mask guidance

Director Rochelle Walensky said the Centers for Disease Control and Prevention changed its mask guidance for all people in the United States because the science changed. Dr. Eric Cioe-Pena, director of global health and an emergency room physician at Northwell Health, tells CBSN's Tanya Rivero his hope is people will hurry to get vaccinated to end this virus this year.
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