Allergic reactions after vaccination with COVID-19 vaccines
Cases of allergic reactions have been reported following administration of the various COVID-19 vaccines, ranging from mild skin reactions to anaphylaxis. The following table indicates the main ingredients present in the formulations, by type of vaccine, that could be related to allergic reactions. Additionally, it is important to consider that the impurities contained in the natural latex used in preparing the cap of the vaccine container or the prefilled syringe can cause reactions of hives and anaphylaxis. Therefore, the use of synthetic latex is recommended for development of the vaccine container's closure system.
Vaccines and allergic reactions: The past, the current COVID-19 pandemic, and future perspectives. European Journal of Allergy and Clinical Immunology.