Chicken eggs contain a lot of allergenic proteins and can cause very severe allergic reactions, as such they are on the EU list of 14 allergens which need to be declared in packaging.
Gal d 1 to 4 are allergens found in the egg white. Gal d 5 is an allergenic protein in the yolk called serum albumin.
Gal d 7 is an allergen linked to those with an allergy to the consumption of chickens.
Gald d 8, 9 and 10 are allergens linked to fish/chicken allergens (gal d 8 is also known as alpha-parvalbumin).
An allergy to egg can sometimes be associated with an allergy to chicken, this is called Bird-Egg Syndrome. In these cases sensitivity to egg is to the proteins in egg yolk, alpha livetin (gal d 5), which is found in both chickens and eggs.
There is high cross reactivity with bird eggs from other species, such as duck, turkey and goose as they all have a similar composition of proteins.
Egg allergy is seen sometimes in patients who suffer from a chicken food allergy and also in combination with a fish allergy.
Other foods containing aldolase and enolase proteins include chicken, cod, catfish, salmon and tuna.
Beef, chicken and pork are other foods containing serum albumin proteins.
Allergen Encyclopedia - Egg White
Allergen Encyclopedia - Egg Yolk
Allergy UK - Egg Allergy
Anaphylaxis Campaign - Egg Allergy
FARE (US) Egg Allergy
Articles and Journals
Avoidance of Hen's Egg Based on IgE Levels Should Be Avoided for Children With Hen's Egg Allergy, 2021
Association between sites and severity of eczema and the onset of cow’s milk and egg allergy in children, 2020
Safe egg yolk consumption after a negative result for low‐dose egg oral food challenge, 2020
Safety of Measles, Mumps, and Rubella Vaccine in Egg Allergy: in Vivo and in Vitro Management, 2020
Influenza vaccine recommendations for children with egg allergy, 2018
Tolerance of a high-protein baked-egg product in egg-allergic children, 2016
Oral Immunotherapy for Egg Allergy: A Double-Blind Placebo-Controlled Study, with Postdesensitization Follow-Up, 2015
Allergenicity of pasteurized whole raw Hen's egg compared with fresh whole raw Hen's egg, 2015
Cracking the egg: An insight into egg hypersensitivity, 2015
Egg Food Challenges are Associated with More Gastrointestinal Reactions, 2015
Factors associated with the course of egg allergy in children, 2015
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