Question pretaining to pregnacy and blood type?

Question

A woman wit htype A blood can have a healthy baby with type B blood. Why doesn't the baby develop hemolytic disease of the newborn?

Answer 1

In pregnancy, maternal-fetal incompatibility of blood types can occur. This is usually very rare — less than 0.1% of births. ABO incompatibility occurs most commonly when the mother is type O and her fetus is A, B, or AB. Symptoms in newborns can include jaundice (yellowish coloring to the skin), mild anemia, or elevated bilirubin levels. A baby showing these symptoms will have a blood test to check these levels. Treatment for high bilirubin levels includes phototherapy (bili lights), which helps break down excess bilirubin. This treatment is usually successful, so there is no need for a blood transfusion.