Two of the three biggest western vaccine makers tried to calm fears over a new coronavirus strain, with the University of Oxford and BioNTech predicting existing jabs would continue to prevent severe disease.
西方三大疫苗生产商中的两家试图平息人们对一种新的新冠病毒株的担忧，牛津大学(University of Oxford)和BioNTech预测，现有的疫苗将继续预防重症。
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