Professor Krzysztof Tomasiewicz (the head of the Infectious Diseases Clinic of the Independent Public Clinical Hospital in Lublin) summaries the work progress on the polish drug for COVID-19 based on the convalescent plasma. Article in polish.
https://www.termedia.pl/Pacjentow-z-COVID-19-musimy-leczyc-juz-dzisiaj,147,40933,0,0.html