According to a new study published in The Lancet Infectious Diseases, the XFG variant has four key mutations and displays ...

A COVID-19 strain with the nickname of "nimbus" has become the dominant variant of that disease in the U.S. but hasn't yet ...

Here's what is known about the new Covid XFG, or 'Stratus', variant from UK cases and symptoms to what the World Health Organisation has said ...

The new XFG strain of Covid, nicknamed the Stratus variant, is "growing rapidly", the World Health Organisation (WHO) says ...

The UK is now grappling with a new 'Frankenstein' variant of Covid, which has swiftly become the most widespread strain in ...