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New XBB.1.5 COVID variant 'most transmissible' yet detected, senior WHO official warns
Yahoo News UK· 2 years agoThe XBB.1.5 COVID variant is a sub-variant of Omicron, and is confirmed to be spreading in 25...
The XBB.1.5 COVID variant is a sub-variant of Omicron, and is confirmed to be spreading in 25...