#cvoid-19 美国CDC总监:口罩是防护病毒最有效的防护手段
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The Path Forward: CDC Director Says Masks are Powerful Tool for Combating Virus | U.S. Chamber of Commerce
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The Path Forward: CDC Director Says Masks are Powerful Tool for Combating Virus | U.S. Chamber of Commerce

U.S. Chamber President Suzanne Clark and CDC Director Dr. Robert Redfield discuss the state of the pandemic on Path Forward.