LONDON (REUTERS) - Britain on Sunday (Dec 12) raised its Covid-19 alert level to four, from level three, in response to the rapid spread of the Omicron coronavirus variant.

       This was at the recommendation of the country's chief medical officers.

       "Early evidence shows that Omicron is spreading much faster than Delta and that vaccine protection against symptomatic disease from Omicron is reduced," the government said in a statement.

       The upgrade to level four means the health authorities think that the rates of transmission are high and putting pressure on healthcare services.

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