What effect does an allergy to egg or gelatin have on vaccine administration?

An allergy to egg or gelatin can lead to anaphylactic reactions with certain vaccines because some vaccines may contain traces of these substances. For example, the influenza vaccine and some formulations of the MMR (measles, mumps, rubella) vaccine are produced using egg or gelatin, and individuals who are allergic to these components could potentially experience severe allergic reactions upon receiving such vaccines.

Healthcare providers are generally cautious when administering vaccines to patients with known allergies to these substances, and they may recommend alternative vaccines when possible or monitor the individual closely during vaccination. Thus, understanding the implications of egg or gelatin allergies is crucial when discussing vaccine safety and administration.