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    "关于搭乘航班赴华人员须进行新冠病毒核酸检测血清抗体检测双阴性检测的通知". 中华人民共和国驻美利坚合众国大使馆. 2020-10-29. Archived from the original on 2020-12-04. Retrieved 2020-11-02. "关于更新驻美国使馆接受的核酸、抗体检测实验室的通知"...
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