A Covid-19 vaccine being developed by Pfizer and Germany’s BioNTech has been found to be more than 90 per cent effective, in a breakthrough that could make the shot available for use by the end of the year if drug authorities give it the green light.
輝瑞(Pfizer)和德國BioNTech聯合開發的新型冠狀病毒肺炎（COVID-19，即2019冠狀病毒病）疫苗被發現具有90%以上的有效率。這一突破意味著這種注射劑有望在獲得藥監部門批准後，在今年底就可用。
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