Greece

Visitors who are arriving from the United States must complete a passenger locator form before departure and present one of the following: proof of vaccination; proof of recovery from Covid-19 in the previous 180 days; a negative result from a molecular (P.C.R.) test performed no more than 72 hours before the scheduled arrival; or a negative result from a rapid antigen test performed no more than 24 hours before the scheduled arrival. Children under 5 are exempt. Vaccination certificates are considered valid for 9 months following the completion of the first course of vaccination; travellers who have also received a booster dose are considered vaccinated indefinitely. Passengers may be subject to testing at the airport on arrival. The C.D.C. risk assessment for Covid-19 is Level 4: Very high.