The Omicron variant has been reported in 57 nations and the number of patients needing hospitalisation is likely to rise as it spreads, the World Health Organisation (WHO) said on Wednesday.
On November 26, the WHO declared Omicron, first detected in Southern Africa, a variant of concern. It is the fifth SARS-CoV-2 strain to carry such a designation.
The spread of Omicron, coupled with enhanced testing and low vaccination rates, may have played a role.
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