What is the significance of the Hh blood group system in relation to the development of hemolytic disease of the newborn?

A It is a high-frequency antigen that can cause severe hemolysis
B It is a low-frequency antigen that rarely causes hemolysis ✓
C It is an antigen that can cause mild hemolysis in newborns
D It is not associated with hemolytic disease of the newborn

Explanation

The Hh blood group system is a low-frequency antigen that rarely causes hemolysis, and its significance lies in its potential to cause mild hemolytic disease of the newborn in rare cases.

Source

ISBT website
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: high