Early evidence shows a “clear” drop in the effectiveness of current Covid-19 vaccines against the Omicron variant of coronavirus, according to the head of the European drugs regulator, who said it will take time to reach a consensus on whether variant-targeted vaccines will be needed.
欧洲药品监管机构负责人表示,早期证据表明,现有的新型冠状病毒肺炎(COVID-19,即2019冠状病毒病)疫苗对抗Omicron变种的有效性“明显”下降。她表示,在会不会需要针对这一变种的疫苗的问题上,各方需要一段时间才能达成共识。
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