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Continue to Chat美疾控中心:美國目前新冠肺炎確診病例中83%的患者感染德爾塔毒株 https://blog.wongcw.com/2021/07/21/%e7%be%8e%e7%96%be%e6%8e%a7%e4%b8%ad%e5%bf%83%ef%bc%9a%e7%be%8e%e5%9c%8b%e7%9b%ae%e5%89%8d%e6%96%b0%e5%86%a0%e8%82%ba%e7%82%8e%e7%a2%ba%e8%a8%ba%e7%97%85%e4%be%8b%e4%b8%ad83%e7%9a%84%e6%82%a3%e8%80%85/