A Brief History of Human Blood Groups - PMC

Type A Blood Donors blood type Blood Types Every blood type is needed to help patients who count on lifesaving transfusions But what you may not know is that each blood type can help in blood type It was not until the year 1900, when Karl Landsteiner at the University of Vienna, discovered why some blood transfusions were successful while others could be

blood link COVID-19 · Type A blood may be at higher risk for COVID-19 infection · Type O blood may be somewhat less likely to test positive for COVID-19 and have less