601f9fde_Adverse_Transfusion_Reactions__Definition
[Type of Reaction] Alloimmunization to red cell antigens (usually an anamnestic immune response that occurs from 3-10 days post-transfusion) Risk: 1-1.6% per donor unit [Symptoms] • Fever • Decreasing hemoglobin • Mild jaundice • Signs of hemolysis in about 20-35% of sensitized recipients [Definition] 
Development of newly formed antibodies to red cell antigens
Adverse Transfusion Reactions
Definition