A booster shot of the BioNTech/Pfizer vaccine is 95.6 per cent effective against Covid-19 compared with those receiving two shots and a placebo, the companies said on Thursday, citing preliminary results from the first randomised, controlled trial on boosters.
BioNTech和輝瑞周四表示，與那些接種兩劑和一劑安慰劑的人相比，接種BioNTech/輝瑞疫苗加強針對預防新冠的有效性為95.6%，并引用了關于加強針的首次隨機對照試驗的初步結果。
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