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July 22, 2021
Uncategorized

CDC:全民戴口罩 美國疫情1到2個月內獲控制

美國新冠肺炎單日新增確診病例,周二增加6.7萬例,再次刷新紀錄。至於佛羅里達州周二再多132人病亡,創單日新高,最近一周的平均死亡數字較2周前多一倍。疾病控制及預防中心(CDC)呼籲市民外出時戴口罩,有別過往建議在未能保持社交距離的情況下才戴口罩。

CDC主任瑞斐德(Robert Redfield)周二表示,假如每個人都戴上口罩,全美的新冠肺炎疫情有望在四到八周內獲得控制,呼籲決策官員應該考慮下令全民戴口罩。

瑞斐德接受美國醫學會雜誌 (JAMA) 採訪時說:「我想我們很清楚,現在該戴上口罩了。」科學家說,這種病毒可能在被感染者咳嗽或打噴嚏時,透過飛沫傳播感染更多人。研究顯示,口罩可能抑制傳播的有效屏障。一些研究人員更認為,新冠病毒可能透過霧化的飛沫或空氣中的顆粒傳播,如果是通風不良的空間,這個機率更高。

世衛上周一改先前說法,表示需要對空氣傳播的可能性進行更多研究。如果病毒證實可能在室內密閉空間經由空氣傳播擴散,口罩將扮演更重要的防疫角色。

美國新冠病毒已有超過354萬宗,接近14萬人死亡。

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