The World Health Organization warns of very high risk posed by the omicron variant

People step off a tram in Nottingham, England, the city where one of the two cases of the omicron variant of COVID-19 were identified last week.

The newly identified strain of the coronavirus, which could be more transmissible than the previously dominant Delta variant, has global health officials worried about a possible new surge in cases.

(Image credit: Joe Giddens/PA Images via Getty Images)



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