Holidaymakers in Portugal will be asked to provide a negative COVID-19 test, a vaccination certificate or proof of recovery to stay in hotels or other holiday accommodation, the government announced on Thursday, as infections continue to rise.

Portugal’s new daily case numbers have been increasing steadily in recent weeks, returning to levels last seen in February when the country was under a strict lockdown. Nearly 90 percent of cases are of the more contagious Delta strain.

As the Delta variant spreads, the country is fighting to salvage the usually busy summer season.

Negative tests, vaccination certificates or proof of recovery will also be required to eat indoors at restaurants in 60 high-risk municipalities, including Lisbon and the city of Porto, on Friday evenings and at the weekend.

Holidaymakers and restaurant customers can use the EU digital COVID-19 certificate. Rapid antigen tests will also be valid, the minister said, and can be provided by hotels at check-in. The new rules come into force on Saturday.

Children under 12 accompanied by a parent or guardian are exempt.