The 73-year-old man's condition had been severe from the very beginning. As reported by rmf24.pl:

The patient was admitted to the hospital with symptoms of a severe case of coronavirus: pneumonia and respiratory failure.

The man became infected through contact with another family member who had come to Poland to visit from the United States.

This is already the second fatal victim of coronavirus in Poland. Earlier, a 57-year-old woman died in Poznań.