For persons with immediate allergic reactions to mRNA COVID‐19 vaccines, skin testing
(ST) to the vaccine/excipients (polyethylene glycol [PEG] and polysorbate 80 [PS]) has been …

Background COVID‐19 vaccines are currently the most effective interventions in controlling
and preventing severe disease progression. Dermatologic reactions to COVID‐19 …

Importance Vaccination against SARS-CoV-2 is a highly effective strategy to prevent
infection and severe COVID-19 outcomes. The best strategy for a second dose of vaccine …

This guidance updates 2021 GRADE (Grading of Recommendations Assessment,
Development and Evaluation) recommendations regarding immediate allergic reactions …

Severe allergic reactions following SARS-COV-2 vaccination are generally rare, but the
reactions are increasingly reported. Some patients may develop prolonged urticarial …

Background Polyethylene glycol (PEG) has been used for decades, but only caused allergic
reactions exceptionally. Introduction of PEG-containing COVID-19 vaccines might have …

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) started in
December 2019. An immediate prevention approach for the outbreak is the development of …

Abstract The coronavirus disease 2019 (COVID‐19), induced by the severe acute
respiratory syndrome coronavirus 2, is responsible for a global pandemic following …

Background Reports of allergic reactions to coronavirus disease 2019 (COVID-19) vaccines,
coupled with an “infodemic” of misinformation, carry the potential to undermine confidence in …

Currently available vaccines are safe, but, potentially, any vaccine can cause an allergic
reaction and, albeit very rare, anaphylaxis can occur. Although its rarity, the precise …