What is known about new Covid variant XBB.1.5? https://ift.tt/AEFjIxz The latest Omicron variant is making scientists take notice in the US - so what do you need to know? https://ift.tt/Gr9fFq4 January 04, 2023 at 10:40PM BBC News - Home https://ift.tt/5DRe2JY