Covid Stratus warning as ITV's Dr Sara explains two 'telltale' symptoms of new variant
Coronavirus
As cases of the new Covid variant, known as Stratus, are surging across the country, an ITV doctor has explained the two 'telltale' symptoms to look out for. Stratus, encompassing two sub-variants XFG and XFG. 3, is the most prevalent Covid strain across the UK, according to the World Health Organization (WHO), as of late September 2025. It was initially identified in January 2025 and has since spread across various areas of the country. Another variant, known as Nimbus, has also been
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