 Ndị ọkachamara na-ekwu na ọ bụrụ na nwaanyị nwere Rhesus- negative Rh lụọ nwoke nwere Rhesus- positive Rh dị ime mbụ ya ọ bụrụ Rhesus- positive Rh , o nwere ike isi nalọ placenta banye nọbara nwa ọzọ butere ya ọrịa a kpọrọ rhesus Disease. 