2. Myelosuppression : Transfusion reaction
—An allergic reaction to some of the cells or proteins in another person's blood.
Healthline.com (OMS Preferred Provider)

3. Transfusion reaction - hemolytic - Overview
A hemolytic transfusion reaction is a serious problem that occurs after a patient receives a transfusion of blood. The red blood cells that were given to the patient are destroyed by the patient's own immune system.
www.umm.edu