Passengers arriving from Italy and the Canary Island of La Palma will have to isolate when they get to Jersey from Sunday.
The countries are being upgraded from green to amber on the government's Safe Travel list.
That requires two coronavirus tests taken five days apart, and quarantine until a second negative result.
Germany, Slovenia and Turkey could also change to amber in the coming days because of rising Covid-19 cases.
"At present, Germany, Slovenia and Turkey are in the green category of the countries risk assessment, however, the number of cases is continuing to rise. If this trend continues, it is likely that they will be re-categorised in the next few days." - Government of Jersey.
The latest classification of countries can be found at gov.je/coronavirus.

The Boat Show is back at St Helier Marina
'Partnership Leads' appointed of new school grouping system
Businesses to get more money towards cost of training staff
Andium marks record year for new homes in Jersey
Princess Anne opens Jersey Zoo gorilla enclosure
Tarifa Jet and Caesarea Trader return to service
Jersey Post returns to profit
Could harnessing the youth vote change the election?
Comments
Add a comment