U.S. Officially Classifies Omicron As A “Variant Of Concern” Alongside Delta
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Three days after the World Health Organization declared Omicron a “variant of concern,” the U.S. SARS-CoV-2 Interagency Group followed suit. In doing so, it cited multiple factors including the rapid spread of the new Covid-19 variant, its large number of mutations and that it has caused the “displacement of Delta in South Africa.” That last [

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