Real-World Evaluation of Allergic Reactions to Two MMR Vaccine Formulations in Children with Egg and/or Cow’s Milk Allergy

MMR vaccination was generally well tolerated in children with egg and/or cow's milk allergy. While rare immediate reactions may occur with vaccines containing milk-derived proteins, these findings support continued adherence to current vaccination recommendations, with awareness of vaccine composition and appropriate vaccination settings rather than vaccine avoidance.