The446 Canadian nurses in the study were assigned to wear either masks or N95 respirators while treating patients with respiratory illness and signs of fever over a roughly three-month period.

  • 在大约三个月的里,此项的446名加拿大护士在护理患有呼吸系统疾病和发烧症状的病人时被指派佩戴外科口罩或者是N95呼吸防护口罩。

  • 互联网摘选 2025-01-20 13:31:39

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