Egg allergy is one of the most common food allergies[6]. Studies have demonstrated that 1 to 2% of young children could be allergic to eggs, which represents approximately 800 children in the 12 to 23 month age group in Quebec[7 ,8]. This allergy is often diagnosed around 18 months of age, when egg is introduced into the child's diet. Almost half of egg-allergic children are identified around 10 months of age[9 ,10 ]. We estimate that this allergy will have completely disappeared by the age of 5 in 66% of allergic children and 7 years of age in by 75%[11 ,12 ]. In the last decades, the duration of egg hypersensitivity seems to have increased until late childhood and sometimes into adolescence[13 ]. Persistent egg allergy into adulthood is rare. Persistent egg allergy essentially remains a paediatric issue. We can, therefore, estimate that in Quebec, there are over 3000 egg-allergic children between 1 and 9 years of age.