The spectrum of ABO haemolytic disease of the fetus and newborn in neonates born to group O mothers.

Background And Objectives: ABO haemolytic disease of the fetus and newborn (HDFN) is a lesser recognized entity; however, the severity may vary in neonates. This prospective observational study was performed to determine the severity and risk of ABO-HDFN in neonates born to O group mothers.

Materials And Methods: A total of 260 neonates born to non-alloimmunized blood group O mothers were recruited.