COVID-19 cases are surging across the US, driven by new variants like the highly transmissible Nimbus (NB.1.8.1). This Omicron subvariant, first detected in 2025 in China, causes a distinct ...

Covid cases are increasing across the UK as Nimbus and Stratus become the most commonly detected strains this autumn.

A new strain of Covid, with a unique symptom, is circulating in the UK, accounting for a high proportion of cases in England. The new strain, called Stratus, has two variants, XFG and XFG.3, with some ...

A higher proportion of adolescents who tested positive for COVID-19 reported ongoing symptoms compared with those who tested negative or never tested.

If you feel unwell with a bad throat and a temperature you may well have caught one of the new strains of Covid circulating ...

The common cold isn't just a nuisance, as research reveals its complex biology, surprising severity, and unexpected ...