A post-vaccination allergy is an allergic reaction that occurs after vaccination. This phenomenon can be caused by several factors, including improper storage of vaccines, irregularities in the production or administration of vaccines, and individual reactions of the body to vaccine components.
Manifestations of post-vaccination allergies can vary from minor local symptoms such as redness and swelling at the site of vaccine administration to more severe manifestations such as urticaria, anaphylaxis or angioedema. If allergic reactions occur after administration of the vaccine, you should immediately consult a doctor to provide the necessary assistance.