Since he was 18, James Harrison has donated blood every few weeks without fail for a total of over 1,000 donations. That alone is remarkable.
What’s even more remarkable is Harrison’s blood carries an antibody for Rh disease. This disease results in an incompatibility between a baby and mother’s blood. After it was discovered Harrison’s blood carried the antibody, his blood was used to develop a vaccine to address the Rh incompatibility issue between a mother and child’s blood. As a result, this vaccine–and therefore Harrison–has saved the lives of over 2 million babies worldwide.