唉，原文多处可都是用的 “likely“ 哦。关键在最后1段。

These findings suggest that antibodies elicited by primary infection and by the BNT162b2 mRNA vaccine are likely to maintain protective efficacy against B.1.1.7 and most other variants but that the partial resistance of virus with the B.1.351 spike protein could render some individuals less well protected,  supporting a rationale for the development of modified vaccines containing E484K.

老兄啊，你这标题 跟原文的原意可有不小差距哦。还是得对现有疫苗进行改进开发啊。