People travelling to Jersey from a "green" area will have to self-isolate until they receive their first negative test result from Tuesday (13 October), following a States debate.
Deputy Inna Gardiner wanted this rule to come into force immediately as there are concerns about rising numbers of people testing positive. 17 cases have come through Jersey's borders since Friday.
Jersey's Health Minister lodged an amendment for the changes to start when 12 hour turnarounds for arrival swabs can be provided. This would be done through the on-island testing site, which is set to be fully processing all arrivals tests by next week.
It comes on the day new travel restrictions start on the island, as more regions move from green to amber and amber to red.
For the full list of country classifications, visit the Government of Jersey's website.