German officials classified the United States as “high risk” because of the rising number of cases there, affecting unvaccinated tourists who wish to travel to the European country, writes The New York Times.

After weeks of being able to visit Germany relatively easily, American tourists and other nonessential travelers will have to quarantine for 10 days, if they cannot document full vaccination or immunity from a past infection. They can shorten their quarantine with a negative test on the fifth day.

The new classification is part of a weekly assessment done by German officials based mostly on infection rates in other countries. Turkey and Israel were also reclassified as high risk.

Coronavirus cases in the United States have steadily risen since early July, driven largely by the more contagious Delta variant of the virus.