Food allergies can be transmitted from blood products to children in rare cases

In rare cases, children can develop anaphylactic allergies to previously tolerated foods after receiving blood products via transfusion, report the authors of a case study. Blood donors who have food allergies can transfer immunoglobulin E, an antibody that reacts against allergens, from blood products such as platelets, the researchers say, however they note that it is very rare.

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