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July 22, 2021
Uncategorized

巴西啟動中國產疫苗臨床試驗 最快9月上市

當地時間21日,巴西開始對中國製藥公司科興研發的新冠疫苗進行III期臨床試驗。巴西六個州的大約9000名衛生工作者將接受這種名為CoronaVac的新冠疫苗。每位志願者將在接下來的三個月中接受兩劑疫苗。此外,中國兩家公司也在巴西、孟加拉國、阿聯酋啟動疫苗III期臨床試驗。

測試在聖保羅及里約熱內盧等六個州進行,由9000名的醫護人員志願者接種,預計90日內,可以獲得首批試驗結果。測試計劃主管人員指,如果證明疫苗安全有效,巴西在明年初將接收1億2千萬劑疫苗。

巴西新冠疫情依舊嚴峻,昨日再新增4.1萬宗病例,至今有超過215萬宗確診個案,8.1萬多人死亡。全球在研新冠疫苗共計155種,其中23種進入了臨床試驗階段。目前至少有3種疫苗處於III期,另有至少3種已完成II期。

中國兩家公司在巴西、孟加拉國、阿聯酋啟動III期臨床試驗。多個疫苗公佈樂觀的試驗數據,顯示可在人體內有效誘發免疫反應,且安全性良好。新冠疫苗今年一定會出現,最快可能9月上市,但保護率可能達不到100%。

7月20日,醫學專業期刊《柳葉刀》介紹了英格蘭牛津大學新冠疫苗研究進展情況。研究顯示,從臨床Ⅰ/Ⅱ期試驗結果來看,疫苗沒有出現早期安全隱患,並在免疫系統的兩個部分均引起了較強的免疫反應。

另外,澳大利亞還在對現有肺結核疫苗是否對新冠病毒具有療效開展研究,目前相關試驗也已進入第三階段。

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