https://www.cbc.ca/news/world/most-prolific-blood-donor-1.7472937
"Harrison's plasma contained the rare antibody Anti-D, also known as Rhesus D antibody, which is used to make the medication given to mothers whose blood is at risk of attacking their fetuses. He donated plasma 1,173 times and is credited with saving 2.4 million Australian babies, according to the Red Cross."
"Harrison donated blood every two weeks from age 18 in 1954 to his retirement in 2018 at age 81."
A true saint.