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世界卫生组织负责传染病的执行干事戴维·海曼4月16日宣布,经过全球科研人员的通力合作,终于正式确认冠状病毒的一个变种是引起非典型肺炎的病原体。 海曼说,自从世界卫生组织今年3月12日
David Hayman, WHO executive director for infectious diseases, announced on April 16 that it has finally officially confirmed that a variant of the coronavirus is the causative agent of atypical pneumonia after concerted efforts by researchers worldwide. Heymann said that since March 12 this year the World Health Organization