A new Covid variant found in the UK is more transmissible than previous strains - but it's still too early to know just how contagious it is, health experts have warned.
The UK Health Security Agency (UKHSA) said it was looking at the XE variant, which is a mutation of the BA.1 and BA.2 Omicron strains.
It is what's known as a "recombinant" - meaning it has been formed from at least two other viral sources.
