That would have been true had the question was asked 15-20 years ago when MMR (Measles, Mumps and Rubella) vaccines were still grown in eggs. Nowadays, in the United States and Europe, the MMR vaccine is cultured is a chick embryo fibroblasts. This is in a tissue culture and egg allergies is no longer an issue with the MMR vaccine. Therefore, children with egg allergies can still get the MMR vaccine. Please consult with your pediatrician to come up with a vaccination plan.