Sub-lineages of Omicron have been the dominant strains circulating across the globe, with new mutations continuously evolving.

奥密克戎亚型一直是全球流行的主要菌株，新的突变不断进化。

Health officials say variants, new mutations of coronavirus may increasingly threaten the U.S., as they have other countries.

卫生官员说，与其他国家一样，冠状病毒的变体，新突变可能会越来越多地威胁美国。

Mr. Drexler and researchers in Europe and Africa studied that polio virus. They found it had some new mutations.

Drexler和欧洲以及非洲的研究人员对脊髓灰质炎病毒进行了研究。他们发现出现了一些新的突变。

There's been a lot of fast-moving news over the past few days concerning a new variant or new mutation of coronavirus.

这几天有很多关于新冠病毒一种新的变种或变异毒株的新闻快讯。

What's unknown is how long the vaccine's protection from the virus will last and if they're effective against new mutations, new versions of coronavirus.

目前尚不清楚的是，疫苗对病毒的保护能持续多久，以及它们是否对新突变、新的冠状病毒有效。

This new mutation will spread like gangbusters and in a few generations, you'd have more males than females in the whole purple people eater population.

这种新型变异发生的非常快，仅仅几代人紫色吃人群体中雄性的数量就比雌性的多很多。

So quickly that by the time the virus has moved from one point to the next, it's going to have picked up a couple of new mutations.

如此之快，以至于当病毒从一个点移动到另一个点时，它会产生一些新的突变。

Reading out the complete genetic information of a microbe, it allows us to identify viruses, even those we've never seen before, track them as they spread and watch for new mutations.

读出微生物的完整遗传信息， 它使我们能够识别病毒，即使是那些我们以前从未见过的病毒， 在它们传播时追踪它们并观察新的突变。

The BA.2.75 variant has new mutations in the spike protein, of which G446S and R493Q are of particular concern, as they give the variant the ability to evade several antibodies, dnaindia.com reported, citing unnamed experts.

dnaindia.com 援引匿名专家的话说，BA.2.75 变体在穗蛋白中有新的突变，其中 G446S 和 R493Q 尤其令人担忧，因为它们赋予变体逃避多种抗体的能力。

Critics say travel bans aren't very effective against the spread of COVID, but that they could make other countries hesitant to report new mutations of it, if they're afraid they'll be quote " punished" by travel bans.

批评人士称，旅行禁令对遏制新冠病毒传播的效果并不好，其它国家由于担心受到禁令“惩罚”，反而不愿主动报告新的变异毒株。