Rhesus Du incompatibility in a newborn with high levels of anti D and a benign clinical course.

The Rhesus variant Du is regarded as a weak form of the Rhesus D antigen, but haemolytic disease of the newborn may occur if the maternal serum contains Anti-D [5]. We describe the case of an infant with Rhesus Du incompatibility and high levels of Anti-D in the maternal serum, but without clinical evidence of haemolytic disease of the newborn.