Israel is to start offering a fourth dose of the coronavirus vaccine to some of its citizens, a world first, as concerns over the efficacy of existing shots against Omicron continue to mount globally.
以色列将开始向部分公民提供第四剂冠状病毒疫苗,在世界上是头一个。目前,manbetx app苹果 对现有疫苗预防Omicron感染的效力日益担忧。
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