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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.
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.
COVID-19 is remains a public health concern five years after the start of the pandemic. What to know about vaccines, variants ...