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U.K. approves Oxford-AstraZeneca vaccine
British regulators have authorized emergency use of the COVID-19 vaccine from Oxford and AstraZeneca, which is cheaper and easier to store than the Pfizer vaccine. This comes a day after a more contagious U.K. variant of the virus was discovered in the U.S. for the first time. CBS News senior foreign correspondent Charlie D'Agata joins CBSN with more.