Hypotension and cardiovascular signs of anaphylaxis are difficult to recognize in infants. As a result, vaccine-induced anaphylaxis is often underreported.

Hypotension and cardiovascular signs of anaphylaxis are difficult to recognize in infants. As a result, vaccine-induced anaphylaxis is often underreported.

PMID: 

World Allergy Organ J. 2016 ;9(1):32. Epub 2016 Sep 16. PMID: 27679682

Abstract Title: 

International Consensus (ICON): allergic reactions to vaccines.

Abstract: 

BACKGROUND: Routine immunization, one of the most effective public health interventions, has effectively reduced death and morbidity due to a variety of infectious diseases. However, allergic reactions to vaccines occur very rarely and can be life threatening. Given the large numbers of vaccines administered worldwide, there is a need for an international consensus regarding the evaluation and management of allergic reactions to vaccines.METHODS: Following a review of the literature, and with the active participation of representatives from the World Allergy Organization (WAO), the European Academy of Allergy and Clinical Immunology (EAACI), the American Academy of Allergy, Asthma, and Immunology (AAAAI), and the American College of Allergy, Asthma, and Immunology (ACAAI), the final committee was formed with the purpose of having members who represented a wide-range of countries, had previously worked on vaccine safety, and included both allergist/immunologists as well as vaccinologists.RESULTS: Consensus was reached on a variety of topics, including: definition of immediate allergic reactions, including anaphylaxis, approaches to distinguish association from causality, approaches to patients with a history of an allergic reaction to a previous vaccine, and approaches to patients with a history of an allergic reaction to components of vaccines.CONCLUSIONS: This document provides comprehensive and internationally accepted guidelines and access to on-line documents to help practitioners around the world identify allergic reactions following immunization. It also provides a framework for the evaluation and further management of patients who present either following an allergic reaction to a vaccine or with a history of allergy to a component of vaccines.

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