That means that anyone arriving from the island into Guernsey will now have to undertake 14 days quarantine. Previously travellers had the option to instead do seven days quarantine and then have a test.
The announcement comes as Jersey confirms it has more than 60 active cases. Half these have been announced since Friday. Of the new cases, 25 passengers were passengers had travelled to the island and 18 had been isolating since their arrival.
Norway and San Marino have also moved in to Group A today.
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