Current projections suggest there could be 30,000 daily Omicron cases by Christmas Day and 100,000 by the New Year.
One leading scientist has told Sky News there are more than 500 cases of the variant in the UK – and those cases are doubling every three to four days.
But what impact will those soaring infections have on the NHS? And how many people will have received their booster jabs by then?
Thomas Moore takes a look.
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