World Covid Live: World Covid Live: A new COVID variant XBB.1.5, first detected in 2022, has once again raised alarms among health agencies. Descendant of Omicron XBB subvariant, XBB.1.5 is a cross between two earlier strains – BA.2.75 and BA.2.10.1…

World Covid Live: A new COVID variant XBB.1.5, first detected in 2022, has once again raised alarms among health agencies. Descendant of Omicron XBB subvariant, XBB.1.5 is a cross between two earlier strains – BA.2.75 and BA.2.10.1 and has been…