Omicron variant has completely shaken up the known information about Covid-19, and has forced boffins and politicians back to the drawing board in their bid to beat it.
However, it also brings changes for normal people that have grown used to the signs and symptoms of the variants of the virus that have come before.
Now, it is thought that Omicron may not share the three classic symptoms of the older variants - a new and persistent cough, a loss or change in taste or smell and a high temperature.
Instead, many of the new symptoms have more in common with a cold. The NHS has since asked the government to update the official list of symptoms to encourage more people to test for the virus.
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