Covid news live: Pfizer says Omicron-specific vaccine could be available by March; Mexico president tests positive again – The Guardian

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WHO warns of ‘west to east’ tidal wave of variant; China locks down city of Anyang, bringing total under stay-at-home orders to 20m

Author: Samantha Lock, Matthew Weaver, Tom Ambrose, Julia Kollewe, Jon Henley, Niamh McIntyre, Larry Elliott

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