Egg allergy affects roughly 0.9% of all children in the United States, making it the second most common childhood food allergy after cow’s milk. Among children under five, the rate climbs to about 1.3%. In adults, egg allergy is far less common, with an estimated prevalence of just 0.1%.
Prevalence in Children
Egg allergy is overwhelmingly a condition of early childhood. Around 1.4% of two-year-olds in the U.S. have a confirmed egg allergy, a number that closely matches the 1.2% rate found among two-year-olds across a nine-country European study. As children get older, the overall rate drops because many outgrow the allergy, bringing the average across all ages under 18 to about 0.9%.
These numbers are based on “convincing” egg allergy, meaning cases confirmed through clinical history, testing, or food challenges rather than self-reported symptoms alone. Self-reported rates tend to run higher because some parents suspect egg allergy based on a single reaction that may not reflect a true immune-mediated allergy.
Most Children Outgrow It
One of the most reassuring aspects of egg allergy is the high resolution rate. Studies show that about 59% of egg-allergic children develop tolerance by age five, and roughly 73% do so by age six. For children whose allergy persists longer, the outlook is still favorable: up to 82% tolerate egg by age 16. The children least likely to outgrow it tend to be those with very high levels of egg-specific antibodies early on.
Resolution doesn’t always happen all at once. Many children first tolerate baked egg (in muffins, cakes, or breads) before they can handle lightly cooked or raw egg. About 70 to 80% of egg-allergic children can safely eat baked egg, where prolonged high heat changes the structure of the proteins enough to prevent a reaction. Regularly eating baked egg under medical guidance may actually speed up the process of outgrowing the allergy entirely.
Why Baked Egg Is Often Safe
Egg white contains several proteins that trigger allergic reactions, and they don’t all behave the same way when heated. The most abundant protein in egg white is heat-sensitive: it breaks down with sustained cooking, which reduces its ability to provoke the immune system. That’s why a well-baked muffin is often tolerated.
The dominant allergen, however, is a different protein that resists heat regardless of temperature or cooking time. Even boiling for 30 minutes doesn’t reduce its allergic potential. Children who react to this heat-stable protein are more likely to react to egg in all forms, including baked goods, and their allergy tends to take longer to resolve. Allergy testing can help distinguish which proteins a child is sensitized to, giving a clearer picture of what they might tolerate.
Egg Allergy in Adults
Persistent egg allergy into adulthood is uncommon, affecting an estimated 0.1% of the general population. Most adult cases are carryovers from childhood rather than new-onset allergies, though adult-onset egg allergy does occur. When it does develop later in life, it tends to have a significant impact on quality of life because egg is so prevalent in everyday foods, from pasta and baked goods to sauces and processed items.
Oral Immunotherapy
For children whose egg allergy doesn’t resolve on its own, oral immunotherapy (OIT) is an option that involves consuming tiny, gradually increasing amounts of egg protein daily under medical supervision. The goal is to raise the threshold at which a reaction occurs, reducing the risk from accidental exposures.
In one study of children with anaphylactic egg allergy, 80% reached a daily maintenance dose of 1,000 mg of egg protein (roughly equivalent to a third of an egg). After three years of treatment, 55% could tolerate a full serving of egg protein compared to just 5% in a control group that avoided egg entirely. The process takes years, and about 15% of participants in that study dropped out due to persistent side effects or other reasons. OIT doesn’t work for everyone, but for many children with stubborn egg allergy, it meaningfully expands what they can safely eat.
Flu Vaccines and Egg Allergy
If you or your child has an egg allergy, flu shots are safe. Starting with the 2023-2024 season, the CDC no longer recommends any additional precautions for egg-allergic individuals receiving the flu vaccine, regardless of how severe past egg reactions have been. Any age-appropriate flu vaccine, whether egg-based or not, can be used. The only standard requirement is that vaccines be given in a setting equipped to handle allergic reactions, which applies to all vaccines for all people.