At the external EU / Schengen borders, travelers are not required to test negative for COVID-19 but are then required to undergo a 10-day quarantine. People who have a negative test result, but only the one certified by the EU digital COVID-19 certificate, are released from this quarantine !!! Other negative test certificates do not exempt from the obligation to undergo quarantine after crossing the external borders.
Travelers from external Schengen borders are not required to test negative for COVID-19 but must undergo quarantine for ten days. People with a negative test result which is recognized by the EU, are released from quarantine. Other negative test certificates do not exempt from quarantine after crossing the borders.
In the case of travel from non-Schengen countries, 10-day quarantine is reduced when the test result is negative, and the test was performed after crossing the Polish border within a period not earlier than seven days.