Why scientists — and much of the world — reacted so quickly to the omicron variant

NBC News
NBC News

Cover picture for the articleWhen Jeremy Kamil got his first look at B.1.1.529, the coronavirus variant that would soon be named omicron, it didn’t take long to see the differences. More than 30 mutations made the variant's spike proteins, which cover the outside of the virus and are the main targets of vaccines and the...

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