The drive started on January 18 and is set to end on Wednesday. Tests are not mandatory, although from Thursday Slovaks who want to head to work will need to show a result indicating they are not infected.
An all-clear result will be also required for people going to a post office or supermarket.
The mission by the Polish medics was agreed between Polish Prime Minister Mateusz Morawiecki and his Slovak counterpart Igor Matovič.