The chief executive of Moderna has predicted that existing vaccines will be much less effective at tackling Omicron than earlier strains of Covid-19 and warned it would take months before pharmaceutical companies can manufacture new variant-specific jabs at scale.
莫德纳(Moderna)首席执行官预测，现有疫苗在应对Omicron方面的效果将远不如应对此前的Covid-19毒株。他警告称，制药公司需要几个月时间才能大规模生产新的变种疫苗。
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