Abstract

Vaccination against viral and bacterial pathogens represents a challenging issue in allergic subjects, mainly concerning patients undergoing allergen immunotherapy (AIT). For this reason, an international survey has been performed involving a panel of experts who responded to a series of questions, also concerning the COVID-19 impact on allergen immunotherapy and vaccinations.The results showed that co-administration of vaccines and AIT requires caution, mainly during the pandemic era. Moreover, the choice of AIT product should be oriented considering also the safety profile.

Highlights

  • Vaccination against viral and bacterial pathogens represents a challenging issue in allergic subjects, mainly concerning patients undergoing allergen immunotherapy

  • Ulrich and colleagues analysed the data of 875 patients receiving subcutaneous immunotherapy (SCIT) and/or vaccination.[1]

  • A warning has been established for severe allergic reactions to both mRNA and non-mRNA COVID-19 vaccines.[2]

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Summary

Introduction

Vaccination against viral and bacterial pathogens represents a challenging issue in allergic subjects, mainly concerning patients undergoing allergen immunotherapy (AIT). Under the framework of the European Academy of Allergy and Clinical Immunology (EAACI), a group of experts conducted a web-based retrospective survey on practical and safety aspects of AIT during the COVID-19 era.[9] The outcomes showed that AIT starting was postponed in 60% of the participants, and maintenance AIT was continued by 75% (89% for sublingual immunotherapy, SLIT). An international survey explored the practical aspects of AIT and vaccination management during the COVID-19 pandemic. The large majority (95%) had an experience of about 200 patients being vaccinated for infectious diseases during AIT.

Results
Conclusion

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