季節性流感造成全球每年約290,000-650,000人的死亡。577Please respect copyright.PENANAHdyxJheI0I
577Please respect copyright.PENANAKuAagSjpIH
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流感病毒接近每年均會出現變種,基於現時並無統一疫苗對抗各品種,所以很多時候在翌年便要轉換對應的疫苗。577Please respect copyright.PENANAjBuSVposJb
577Please respect copyright.PENANAMZ6GR5V3ZD
(圖2)流感病毒外部、名為HA的部份,將主宰病毒能否進入人體細胞裡頭。577Please respect copyright.PENANA8VQLkzsso7
577Please respect copyright.PENANAaVZ5aJApbD
577Please respect copyright.PENANAJ41HzFnJ3Q
流感病毒的變異較常出現在頭部位置(Head),而現時疫苗的設計亦主要針對HA的頭部位置。577Please respect copyright.PENANAvi0fIB1dr4
577Please respect copyright.PENANAsSQWgpFaEY
其目標是希望人們注射疫苗後,體內會產生對應HA頭部位置的抗體,阻止病毒進入人體細胞繼而作惡。577Please respect copyright.PENANAXVn4KIIfCv
577Please respect copyright.PENANA2uyxvtNk9t
(圖3)另一方面來想,流感病毒變種就如不同顏色的花朵一樣。577Please respect copyright.PENANAo9xvA6fmhD
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577Please respect copyright.PENANAtw3gqBoj1v
雖然花朵各有不同,但莖部位置則大同小異。577Please respect copyright.PENANAF9jHLbG0Uo
577Please respect copyright.PENANAxJpIYZYQ8K
(圖4)基於Stalk位置(花朵莖部位置)的變異成數較細,現時科學家正研發針對Stalk位置的疫苗(Ref1),希望可以透過一款疫苗對抗多款流感變種。577Please respect copyright.PENANA4VL9zVRk9t
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這類型的疫苗現時已進入Phase1狀態,人體試驗找來了51名人士,注射疫苗後體內亦得出相應的大量抗體。577Please respect copyright.PENANAm3QxT2RMyY
577Please respect copyright.PENANAYGWqt2K6IW
而日後所進行的人體試驗,將會能夠獲取資料測量疫苗能否達到預防流感之效。577Please respect copyright.PENANAbkIacHZqyc
577Please respect copyright.PENANAEbx2lTMeqn
若安全性、效率等等均達到合理水平的話,將來不但之可以不用經常轉換疫苗款式,亦能大大減低疫苗與當下流感款式不吻合的機會,皆大歡喜。577Please respect copyright.PENANAVc8bZkuDZY
577Please respect copyright.PENANA60rdF2gk45
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。577Please respect copyright.PENANAFAmw27X8vW
577Please respect copyright.PENANAQJPM8Q7hJX
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc577Please respect copyright.PENANAjwXcpVCqRI
577Please respect copyright.PENANAjRa033AjHX
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。577Please respect copyright.PENANAtID0Xao1qt
577Please respect copyright.PENANAUskE6ZtHus
Link:577Please respect copyright.PENANAYNMf1lu9Ef
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio577Please respect copyright.PENANAJOn7tMHDqX
577Please respect copyright.PENANAA9ayXnHPO3
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。577Please respect copyright.PENANALUtRr2g8xq
577Please respect copyright.PENANAQea3eCgpHA
https://www.instagram.com/potatopigtongue/577Please respect copyright.PENANAlfcxQmfQGI
577Please respect copyright.PENANADx9kLDJ3nv
577Please respect copyright.PENANAUv8A5vgXpU
Ref1:https://www.nature.com/articles/s41591-020-1118-7577Please respect copyright.PENANA8qtvI8FSLE
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #119
深入淺出–流感疫苗的重要發展
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