Pole here. Recently my friend gave birth at 27 weeks to two boys, 700g (1.5 pound) each. Premature newborns spent over 3 months in the hospital (pediatric ICU), were unable to breathe by themselves. Parents got vaccinated in January against corona and the official "early birds" vaccination process for the population started about 3 months later (for public service). Everything was free of charge. I can't imagine having to pay for a visit in the hospital.

EDIT: Also, I know a guy from Denmark who flies to Poland just to fix his teeth.