we therefore evaluated the immune status of three groups of blood product recipients without aids in new york city , including 47 persons with hemophilia a receiving factor viii concentrate , 50 persons with homozygous beta-thalassemia , and 27 persons with sickle cell anemia receiving frozen-packed rbcs and 20 healthy persons who had not received a transfusion .
C0019069
hemophilia a
C0015506
factor viii