The more infectious B.1.1.7 variant that has come to dominate coronavirus infection in the UK is evolving further mutations, which scientists say will make existing vaccines less effective at preventing infection.
已在英國(guó)成為新冠病毒感染主導(dǎo)毒株的更具傳染性的B.1.1.7變種,正進(jìn)化出更多的突變。科學(xué)家表示,這將降低現(xiàn)有疫苗預(yù)防感染的效力。
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