A new Covid variant nicknamed Stratus has become the dominant strain spreading in the UK. Also known as XFG, it was first ...

Using a logistics model, variant XFG was “estimated to have the highest relative growth advantage than co-circulating ...

A new Covid variant, known as XFG and dubbed Stratus, is swiftly becoming prevalent in the UK and globally, with experts warning that it's bypassing immunity. The Stratus strain, which has surged to ...