my child (age-1 year) with HbA0(ADULT)-50.9%; Hb A2-3.3%; Hb F-3.8%, Hb 'D' WINDOW-NIL;
Hb 'S' WINDOW-37.3%; Hb 'C" WINDOW-NIL, is found to be affected by sickle cell trait, what precaution should be taken of & what is the percentage of risk factor?