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WHO says Omicron strain of coronavirus is a ‘variant of concern’
Covid: New strain Omicron labelled ‘variant of concern’ by WHO, as Belgium confirms case
New Covid strain named Omicron, is 'variant of concern'
WHO designates new COVID strain Omicron as ‘variant of concern’
WHO classifies renamed Covid strain, Omicron, 'variant of concern' | AFP
Omicron: Why this Covid ‘variant of concern’ is considered more dangerous than Delta
New Omicron strain of Covid deemed ‘variant of concern’ by WHO
Omicron COVID variant a concern to medical groups
Omicron Variant Is a Concern, Says World Health Organization
New Covid Variant I What is Omicron, Is It Worse Than Delta, And Can Vaccines Tackle It?
New Covid variant designated 'variant of concern' and named Omicron | ITV News
WHO Says Covid ‘Variant Of Concern’ Detected In South Africa