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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 published in CMAJ (Canadian Medical Association Journal).

“People shouldn’t be overly concerned about passive transfer of allergy from blood products, says Dr. Julia Upton, The Hospital for Sick Children (SickKids), Toronto, Ontario. “This condition has an excellent prognosis and typically resolves within a few months.”

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