10 February 2020 Is vaccine allergy common? Severe allergic vaccines are rare , but any vaccine can cause an allergic reaction. When these allergic reactions occur, generally are to the components of the vaccine , that is: culture medium; stabilizers; preservatives; adjuvants; antibiotics; latex. What to do when there is history of allergy to a vaccine? When there is history of a severe hypersensitivity reaction or anaphylaxis to a previous dose of a vaccine or to a vaccine component, the patient should go to an immunoallergology consultation to investigate the problem . If my child is allergic to egg, can he be vaccinated with VASPR? VASPR is a measles, rubella and mumps epidemy vaccine. Egg allergy is not a contraindication for immunization with VASPR. Egg allergy does is not associated with an increased risk of anaphylaxis to immunization with live attenuated or inactivated flu vaccines, available in Europe and United States of America (USA). These vaccines can be administered to patients allergic to eggs. However, when an egg allergy is severe, these vaccines are administered in a hospital setting and under observations of healthcare professionals . The authors of this text are the following allergologists from the Hospital da Luz network: Luís Miguel Borrego, Ana Morais Mendes, Ana Reis Ferreira, Andreia Ferrão, Carlos Braga, Cristina Lopes, Diana Pereira da Silva, Filipa Semedo, Isabel Costa Silva, João Gaspar Marques, Pedro Carreiro Martins, Marta Salgado, Nuno Sousa, Rosa Anita Fernandes, Susana Piedade The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.