Passengers arriving in Portugal from Britain must quarantine for 14 days from Monday if they are not fully vaccinated against the coronavirus, the Portuguese government said in a statement.

The new rule, which will remain in place until at least July 11, comes amid a surge in cases in Portugal, where the number of daily new Covid-19 infections is back to February levels, when the country of just over 10 million was still under a strict lockdown.

Daily positive cases have also been rising in Britain for a month, Reuters reports.

Britons arriving in Portugal by air, land or sea must show proof they are fully vaccinated or self isolate for 14 days at “home or at a place indicated by health authorities,” the government said in a statement.