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November 26 2021 8:17pm

Scientists worried Omicron could be the worst COVID-19 variant yet

Scientists believe the new Omicron COVID-19 variant, also known as B.1.1.529, has dozens of mutations, fuelling concerns it could be more transmissible. But how do the vaccines stack up against it? Eric Sorensen looks at what we know so far about Omicron, and why scientists are concerned it could be the worst COVID-19 variant yet.

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