Which vaccine is contraindicated in patients with egg allergy?

The yellow fever vaccine is specifically contraindicated in patients with an egg allergy due to the way the vaccine is produced. The yellow fever vaccine is a live attenuated virus vaccine, and during its production, it uses embryonated chicken eggs. As a result, individuals with a history of severe allergic reactions to egg proteins are at a higher risk for serious allergic reactions if they receive this vaccine.

In contrast, the inactivated polio vaccine, Toronto fever vaccine, and diphtheria vaccine do not have the same contraindications related to egg allergies. The inactivated polio vaccine is made using virus inactivated and then purified, while the diphtheria vaccine is a toxoid vaccine and does not contain egg proteins. Therefore, patients with egg allergies can safely receive these other vaccines without the concern of an allergic reaction related to egg proteins.