A second case of hemolytic disease of the newborn due to anti-Jsa.

A second case of hemolytic disease of the newborn caused by Jsa sensitization is reported. The child was mildly affected and transfusions were not required. The mother and father are Arabs. Jsa was present in the father, the baby in question, and a sibling. In addition, the Fy gene was present in both mother and father, and in two of their three children.