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  1. www.nbcnews.com › science › science-newsOmicron variant: What we know — and don't know - ...

    2021年12月15日 · By Denise Chow. As omicron cases multiply around the world, scientists are racing to characterize the heavily mutated coronavirus variant to understand how it spreads, and gauge new risks during...

  2. www.nbcnews.com › data-graphics › omicron-map-tracking-newOmicron map: Tracking the new Covid-19 variant around the world

    2021年11月29日 · Coronavirus. Omicron map: Tracking the new Covid-19 variant around the world. The omicron variant has been confirmed in more than 30 countries. Nov. 29, 2021, 7:45 PM UTC / Updated Dec. 15,...

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  4. www.nbcnews.com › health › health-newsOmicron subvariant symptoms: How quickly do omicron symptoms ...

    2021年12月21日 · The omicron variant of the coronavirus was first detected in late 2021. It has since swept the globe, eventually vanquishing other variants including delta. Omicron soon began branching off...

  5. www.nbcnews.com › science › science-newsOmicron variant: Why scientists and the world reacted so ...

    2021年11月30日 · Coronavirus. Why scientists — and much of the world — reacted so quickly to the omicron variant. Mutations on the spike proteins of the variant caught the attention of researchers who have been...

  6. www.nbcnews.com › news › world‘No easy exit’: Omicron outbreak tests ...

    2022年3月30日 · The outbreak, driven by a subvariant known as “stealth omicron,” is testing China’s zero-tolerance strategy, which has minimized cases and deaths compared with countries like the United States...

  7. www.nbcnews.com › health › health-newsOmicron: Moderna starts study on variant-specific Covid ...

    2022年1月26日 · Jan. 26, 2022, 2:06 PM PST / Updated Jan. 26, 2022, 5:50 PM PST. By Berkeley Lovelace Jr. Moderna has begun dosing patients in a clinical trial testing its omicron-specific Covid-19 vaccine ...

  8. www.nbcnews.com › health › health-newsOmicron subvariants: What they mean for reinfection risk - ...

    2022年5月3日 · May 3, 2022, 12:33 PM PDT. By Berkeley Lovelace Jr. Omicron and its growing family of subvariants has left Americans wondering whether they have enough immunity to protect against the...