Upvote:6
https://gr.usembassy.gov/covid-19-information/ (mirror):
On July 9, the Greek Ministry of Foreign Affairs posted procedures for international arrivals. See the airport website for additional details. If you are tested for COVID-19, you are permitted to travel to your final destination where you must self quarantine for 24 hours. If positive, you will be notified and quarantined for 14 days. If negative, you will not be notified, and there are no additional quarantine restrictions.
The Athens International Airport (ATH)'s website has indeed more information:
Are quarantine restrictions applied for the arriving passengers?
Depending on their QR code/confirmation, visitors will be subject to test upon arrival. Upon being tested, the visitor is free to move to the final destination. The test results are expected to become available within 24 hours. During that time, passengers who are tested are advised to practice social distancing according to local guidelines and self-monitoring for symptoms that could indicate COVID-19. In case of such symptoms, medical advice and/or contact with the National Public Health Organization (EODY) Operations Centre should be immediately sought.
Only in case they test positive, the authorities will contact them and proceed with the health protocol in place. The procedure of a 24-hour stay at a dedicated hotel, under Greek State supervision, is no longer valid.
For further information or questions regarding the procedure, you may contact the General Secretariat of Civil Protection at 0030 2103359002-3 or email at [email protected].
In case you need to contact the National Public Health Organization (EODY) Operations Centre, you may call (0030) 210 5212054 or e-mail at [email protected]
One can also contact ATH airport via https://www.aia.gr/traveler/contact/