New Covid-19 Variant: Live Omicron News and Updates

President Biden cautioned against panic because of the Omicron variant, as scientists said they needed weeks to understand its true threat.

EXPLAINER: What is this new COVID variant in South Africa?

LONDON — WHAT IS THIS NEW COVID-19 VARIANT IN SOUTH AFRICA? South African scientists identified a new version of the coronavirus this week that they say is behind a recent spike in COVID-19...

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