
武漢肺炎病毒現時的主流品種為D614G,一道較為簡易的說明方法就是原來的D614品種變異成為G614品種。567Please respect copyright.PENANAqMfokpr2Ff567Please respect copyright.PENANA2fWuUPJULG
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而根據GISAID公開資料庫記錄,G614品種最先在1月24日的四川病毒樣本出現。567Please respect copyright.PENANAChmg8wh7tb
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(圖2)何解G614品種能夠成為主流,一直是科學家想解答的問題。567Please respect copyright.PENANAUxAHDq9edm567Please respect copyright.PENANAOhoieOSQ0Z
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之前所獲得的實驗數據,大多是從病毒一小段的部份、或者是合成病毒獲取結果,沒能百分百反映現實。567Please respect copyright.PENANAff1qeTeCby
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直至最近,才有科學家利用真實存在的武肺病毒進行實驗。567Please respect copyright.PENANACxMkvMrNOG
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(圖3)在研究中(Ref1),科學家將D614品種及G614品種以1 : 1的比例從倉鼠的鼻孔注入其體內。567Please respect copyright.PENANATOGD2VEoYE567Please respect copyright.PENANARP064Z1sLa
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如果最終G614品種/D614品種的比例大於1的話,亦即是代表G614品種在繁殖方面比D614品種更為優勝。567Please respect copyright.PENANAEQT1WxmvrX
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(圖4)倉鼠受病毒感染7日後,鼻孔、氣管及肺部個別區域的G614品種/D614品種均大於1,顯示G614品種在上述區域有著較佳的繁殖優勢。567Please respect copyright.PENANA7sfpyfkgl7567Please respect copyright.PENANAZ0jsg3Eqm0
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同時在實驗室的人體肺部細胞中,就算用上D614品種及G614品種以9 : 1的比例方式感染,G614品種/D614品種在其後感染日子均呈大於1的狀態,更進一步顯示G614品種的繁殖優勢。567Please respect copyright.PENANAqAAXdsWMeW
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(圖5)科學家同時亦發現,G614品種的病毒在各種溫度上均比D614品種相對為穩定。567Please respect copyright.PENANAEn6mcfqkLQ567Please respect copyright.PENANAKhRAJvOQ78
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不過好消息是,對抗D614品種的抗體,其對抗G614品種品種效率並無任何損傷。567Please respect copyright.PENANAsjwd2Wv99M
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這亦即間接顯示出以D614品種作原材料的疫苗,其產生的抗體亦能有效對抗G614品種病毒,而事實上現今亦有疫苗是利用G614品種作原材料,奈何是鄰國出品。567Please respect copyright.PENANAACZjgPQIJo
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(圖6)至於近來在挪威發現的新變種M439K品種,基於是新發現的關係,現時醫學界及學術界均無任何學術文章作詳細研究其特性。567Please respect copyright.PENANAVBFBcftKaW567Please respect copyright.PENANAhQLTEkjL4t
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莫論病毒變種與否,只需一個乞嗤,病毒就已經不需近距離接觸,便能透過體液傳播至他人。567Please respect copyright.PENANAhnnZflLKTo
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將「新變種」及「不需近距離接觸」串連在一起的報導手法,有著混淆視聽的成份,並不可取。567Please respect copyright.PENANAIsUqEfWHXI
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。567Please respect copyright.PENANAGETiB75x3U
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Link:567Please respect copyright.PENANAoz7T4TbcrT
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio567Please respect copyright.PENANA6pMuqgsTht
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。567Please respect copyright.PENANA1nQp5hYhUM
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https://www.instagram.com/potatopigtongue/567Please respect copyright.PENANAE6VCAW2Juy
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Ref1:https://www.nature.com/articles/s41586-020-2895-3567Please respect copyright.PENANA9WHLmu0hfK