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和辉瑞周四表示，与那些接种两剂和一剂安慰剂的人相比，接种BioNTech/辉瑞疫苗加强针对预防新冠的有效性为95.6%，并引用了关于加强针的首次随机对照试验的初步结果。
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