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Officials weren't sure how easily the coronavirus spread between people and were concerned that widespread mask-wearing would deplete the scarce protective equipment front-line health workers needed....
Weeks later, the scientists reversed course and advocated that everyone wear masks, a recommendation that helped slow the spread of the virus, but was politicized when prominent Republicans, including former President Donald Trump, cast d
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美国有线电视-特朗普新闻
2021-05-16 00:00:00.0