國藥及科興是中國兩款滅活病毒疫苗。而科興數據其可信性之高,就連公開聲稱戴口罩便沒法說話的梁卓偉院長也怕怕唔敢打。632Please respect copyright.PENANAvlpijORbU8632Please respect copyright.PENANAWgvjLxViAy
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大概是因為中國頭兩款疫苗過於「聲名大噪」,其第三款疫苗康希諾疫苗的關注度則相對較為低。而事實上,康希諾(Cansino)的疫苗設計其實是跟牛津疫苗非常相似。632Please respect copyright.PENANAg0kXRhLmIW
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(圖2)圖中為康希諾及牛津疫苗兩款疫苗的扼要原理。632Please respect copyright.PENANAeJNHez882C632Please respect copyright.PENANAH5babKvAFM
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1.疫苗的主要成份為已被削弱複製能力且無害的病毒,內含武肺S蛋白的DNA資訊。632Please respect copyright.PENANARw7Qdwi5XE
2. 病毒進入人體細胞。632Please respect copyright.PENANAdOsgwZYync
3. 人體細胞利用病毒內含的武肺S蛋白DNA資訊,製作武肺S蛋白。632Please respect copyright.PENANAGBnp0B865J
4.免疫系統的相關細胞辨認武肺S蛋白是為外來之物,因而製作相應的抗體。632Please respect copyright.PENANA8RJTVG14I8
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(圖3)因為康希諾疫苗所用的是人類常見的感冒病毒,約4-6成的人早已擁有對抗這感冒病毒的抗體,因此病毒還沒能進入細胞之前(圖2的步驟2),便早已被自身的抗體攔截。632Please respect copyright.PENANA3eACc7bQA6632Please respect copyright.PENANAi4zgBWegno
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而牛津所用的是黑猩猩所搵到的感冒病毒,原理上人體並沒有對應的抗體,因此亦相對上更易進入細胞。632Please respect copyright.PENANA3aOozCycLr
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以這方面來看,牛津疫苗的設計比康希諾技勝一籌。632Please respect copyright.PENANAmUGTHXLzKd
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最近Bloomberg (Ref3)表示Cansino疫苗的保護效率達65.7%,而它跟Johnson&Johnson的疫苗一樣,均是一次性的方式注射。632Please respect copyright.PENANAoaTpLIyIlF
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延伸閱讀:632Please respect copyright.PENANAQuZBK1T27F
深入淺出–林鄭注射輝瑞/科興疫苗的最壞後果632Please respect copyright.PENANAOZf9SaKrG6
- 分享自 LIHKG 討論區632Please respect copyright.PENANAlJiEQSsnQp
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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/toc632Please respect copyright.PENANAXS6uvQcnOG
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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。632Please respect copyright.PENANAbqZrWHXh93
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Link:632Please respect copyright.PENANA3CF7GWHEu0
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Ref1:https://science.sciencemag.org/content/370/6522/1263632Please respect copyright.PENANAP6mNFMIATl
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6067905/632Please respect copyright.PENANAInzT3gSUpg
Ref3:https://www.bloomberg.com/news/articles/2021-02-08/pakistan-says-cansino-s-covid-vaccine-shows-65-7-efficacy632Please respect copyright.PENANA4vUcNKHVzE