A new COVID variant, XEC, has arrived just before fall. The new variant has sprouted from the Omicron variant that developed in late 2021. Though XEC is new, Prof Francois Balloux, director of the Genetics Institute at University College London, told the BBC that he would be surprised if it became the dominant variant throughout winter.

A Covid modeller says a fourth summer wave is likely as a new variant emerges overseas.

Researchers indicate that the vaccine and booster shots should protect against the new variant. Here is what we know about the XEC variant and what you can do to stay healthy.