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July 22, 2021
Uncategorized

疫苗施打間隔期拉長 BioNTech稱無法確保防護力

一些國家接種輝瑞和BioNTech新冠肺炎疫苗時,打算將第一和第二劑施打間隔時間拉長以擴大接種人數,BioNTech今天警告,沒有數據支持3周以上間隔期的「安全性和有效性」。

德國生技公司BioNTech表示,他們和美國藥廠輝瑞(Pfizer)共同研發的2019冠狀病毒疾病疫苗,臨床數據顯示保護力達到95%,是依照注射2劑且相隔21天的施打時程得出。BioNTech強調:「不同施打時程的安全性和有效性,尚未經過評估。」BioNTech說:「儘管數據…證實,第一劑疫苗施打後,最快12天就會產生局部保護力;但沒有數據證實,接種第一劑疫苗後產生的保護力,能維持到21天以後。」

面對新冠肺炎疫苗供應有限,丹麥昨天表示,將把輝瑞疫苗施打間隔期最多拉長到6周;英國更說要把間隔拉長到最多12周,德國也考慮把間隔期拉長到21天以上。支持延後施打第二劑疫苗的人表示,這麼做能讓更多人口打到第一劑疫苗。

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