The new coronavirus variant linked to a surge in Covid-19 cases in South Africa is not only more infectious than previous forms of the virus but could make some vaccines less effective.
与南非新型冠状病毒肺炎(COVID-19,即2019冠状病毒病)病例激增有关的新冠病毒新变种不只比原先的病毒更具传染性,而且还可能让一些疫苗的效果减弱。
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