A joint team from Israel’s Leumit Health Services, Bar-Ilan University, and Barzilai Medical Center analyzed records of over 10,000 Leumit patients. They found low-dose aspirin (75mg) reduced Covid-19 infection risk by 29% and shortened virus duration by about two days.
https://www.timesofisrael.com/aspirin-may-protect-against-covid-19-israeli-research-finds/