Upon arrival, travelers should be in an institutional quarantine for seven days, and perform a second PCR test after the quarantine period. A PCR test is not required for children under 5 years old. United States of AmericaTravelers who head to U.S. should hold a negative PCR test that was conducted 72 hours ahead of arrival. Germany has also canceled quarantine requirements for travelers with a negative PCR test. Travelers should undergo another PCR test five days after the arrival.