A new Covid strain called Stratus is sweeping the UK, with two variants known as XFG and XFG.3. There's one symptom that Brits have been told to look out for as it's different to earlier strains A new Covid strain dubbed Stratus is spreading rapidly in the UK, accounting for the largest number of cases in England. And there's one tell-tale sign that sets it apart, according to experts. The latest strain, which has two variants - XFG and XFG.3 - was first detected in January. By June, the World

Tag-uri: Coronavirus