A new strain of the SARS-CoV-2 virus that seems better adapted to infect people is fuelling a fresh wave of covid-19 sweeping through Asia and the Middle East and is increasingly showing up in the UK.

Here is what is known about the new Covid NB.1.8.1 variant from cases in the UK, symptoms, what the World Health Organisation has said and more.

American researchers say the new strain of bat coronavirus could be multiple times deadlier the COVID-19 and can cause the ...