Most severely affected child in Rh-isoimmunisation patients :
Rh negative mother with Rh positive in 2nd child
Rh negative mother with Rh positive in 2nd child
Rh positive mother with Rh negative in 2nd child Rh positive mother with Rh negative in 15' child
Rh positive mother with Rh negative in 15' child
Rh positive mother with Rh positive in 2"'d child