As of March 15th 2022 the PLF form has been abolished, so you are not obliged to fill it in before entering Greece.

Since May 1, life in Greece has returned to normal.
This means that from May 1, all tourists coming to Greece will not have to show an EU green certificate when entering the country, nor will they have a negative test, and the measure of showing a Covid-pass for

Brotherhood of cities as a form of cooperation began after the Second World War, when peoples in Europe realized the importance of reconciliation which could start from the local level.
In Europe, this trend is increasing and fraternal cooperation exists in 17,000 cases.

Serbian cities are most frequently twinned with cities in Greece and Hungary.

The reason of twinning can be very different. Novi Pazar is twinned with the municipalities in Turkey where

The authorities of Northern Macedonia have made a decision according to which for entry into the country and stay in it (not for transit), from 1.9. necessary:
or be vaccinated with both doses
or to have a negative PCR test that is not older than 72 hours
or to have a certificate of covid in the last 45 days from the date of recovery

Citizens of Northern Macedonia who return to their country after

Health Minister Vassilis Kikilias announced measures concerning unvaccinated Greek citizens - they do not apply to tourists.
"We are talking about a pandemic of unvaccinated people," emphasized the Minister of Health, Vassilis Kikilias, and emphasized: "More than 90% of patients in the intensive care unit are unvaccinated."
Measures to be applied:
▪ 1 September suspension for hospital staff who have not been vaccinated and do not have a medical