If you feel unwell and have a temperature you may well have caught one of the new strains of Covid circulating this autumn - but there's another nasty tell-tale symptom to look out for. XFG, dubbed Stratus, and NB.1.8.1, known as Nimbus, are now the most common variants being passed around in the UK. Experts say recent genetic changes the virus has acquired may make infections more likely. But while experts say these do not appear to pose any bigger threat than previous types of Covid or make

Tag-uri: Coronavirus