世界卫生组织及其全球研究团队一直在密切关注从世界各地采集的新冠病毒的6万多种不同基因序列的样本。
All viruses evolve, or mutate, throughout their lifespan. RNA viruses like the coronavirus mutate more quickly than some other viruses, top WHO officials told reporters last month, because unlike human DNA, RNA viruses do not have “natural error checking,” meaning that the code of the virus cannot correct itself.
所有的病毒在其生命周期都会发生进化或变异。顶级世卫组织官员上个月告诉记者说,像新冠病毒这种核糖核酸病毒比其他一些病毒变异得更快,因为和人类的脱氧核糖核酸不同,核糖核酸病毒没有“天然的错误检查机制”,这意味着病毒的基因编码不能自我更正。
Not every mutation will lead to any meaningful change in the behavior of the virus or its impact on humans, the WHO previously said. Nonetheless, the United Nations health agency has formed a comprehensive data base of genetic sequences to investigate any potential mutations.
世界卫生组织先前曾说过,不是每种变异都会导致病毒的行为或病毒对人类的影响产生重大变化。不过,联合国卫生机构已经组建了一个基因序列综合数据库来调查任何潜在的变异。
Earlier Thursday, Dr. Soumya Swaminathan, the WHO’s chief scientist, told reporters at a news briefing that “natural mutations” of the virus are to be expected. She explained that there are certain “domains” of the virus that are “more critical,” such as the spike protein, from which the coronavirus gets its name.
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