The Omicron variant of coronavirus appears to have its own set of symptoms, which may differ slightly from previous variants such as Delta and Alpha.
The new highly transmissible variant is spreading faster than any other variant seen in the UK and is expected to overtake Delta as the dominant variant within a matter of days.
Early data from South Africa, where Omicron was first identified, has suggested that people are suffering from milder symptoms with the new variant - but scientists have warned against drawing conclusions around its severity at such an early stage.
Professor Tim Spector is one of the founders of the Covid Zoe app, which tracks coronavirus cases and symptoms in communities, and is now starting to produce data on Omicron
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