The Man who Saved 2 million babies
Mr. Harrison started donating in 1954 and after the first few donations it was discovered that his blood contained an unusually strong and persistent antibody called Rho(D) Immune Globulin. Rho(D) IG is given to Rh(D) negative mothers of unknown or Rh(D) positive babies during and after pregnancy to prevent the creation of antibodies to the blood of a Rh(D) positive child. This antigen sensitization and subsequent incompatibility phenomenon causes Rhesus disease, the commonest form of hemolytic disease of the newborn (HDN).
As blood plasma, in contrast to blood, can be donated as often as every 2–3 weeks, he was able to reach his 1000th donation in May 2011. This results in an average of one donation every three weeks during 57 years. Commenting his then record number:
His donations were estimated to have helped to save over 2.4 million babies with pregnant women being treated with his antibodies, including his own daughter Tracey.