Some vaccines, including the majority of vaccines against influenza, are cultured in chicken eggs. During the process of creating the vaccine, the majority of the egg PROTEIN is removed, but there is some CONCERN that these vaccines might generate an allergic reaction in individuals with an egg allergy.

A recent report found that the majority of children with egg allergies who were GIVEN a flu shot had no adverse reactions; about 5% of children in the studied group developed relatively minor reactions such as hives, the majority of which resolved without treatment.[2] Additional research is underway to study this issue further.

In most cases, only PEOPLE with a severe (life-threatening) allergy to eggs are RECOMMENDED against receiving egg-based vaccines.

Some vaccines, including the majority of vaccines against influenza, are cultured in chicken eggs. During the process of creating the vaccine, the majority of the egg protein is removed, but there is some concern that these vaccines might generate an allergic reaction in individuals with an egg allergy.

A recent report found that the majority of children with egg allergies who were given a flu shot had no adverse reactions; about 5% of children in the studied group developed relatively minor reactions such as hives, the majority of which resolved without treatment.[2] Additional research is underway to study this issue further.

In most cases, only people with a severe (life-threatening) allergy to eggs are recommended against receiving egg-based vaccines.