2021
DOI: 10.1016/j.clim.2021.108748
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Anaphylaxis associated with the mRNA COVID-19 vaccines: Approach to allergy investigation

Abstract: Reports about cases of anaphylaxis to mRNA vaccines have created anxiety in the community and could increase vaccine hesitancy in the population. There are no standardized protocols for allergy testing to mRNA vaccines. PEG is currently the only excipient in both vaccines with recognized allergenic potential. Allergy to PEG has been reported with increasing frequency over recent years, often in patients who had repeated systemic allergic reactions/anaphylaxis to several classes of drugs before diagnosis. Propo… Show more

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Cited by 31 publications
(38 citation statements)
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“…More research is needed to identify the cause of the potentially increased rate of anaphylaxis to COVID-19 vaccines, but polyethylene glycol (PEG) 2000, an excipient used to cover the lipid nanoparticles (LNSs) that contain the mRNA in the COVID-19 mRNA vaccines, is deemed to be the possible culprit of anaphylactic reactions [120].…”
Section: Post-marketing Evidencementioning
confidence: 99%
See 1 more Smart Citation
“…More research is needed to identify the cause of the potentially increased rate of anaphylaxis to COVID-19 vaccines, but polyethylene glycol (PEG) 2000, an excipient used to cover the lipid nanoparticles (LNSs) that contain the mRNA in the COVID-19 mRNA vaccines, is deemed to be the possible culprit of anaphylactic reactions [120].…”
Section: Post-marketing Evidencementioning
confidence: 99%
“…Due to the rarity of severe allergic reactions to COVID-19 vaccination and the not yet elucidated mechanisms underlying those adverse reactions, diagnostic procedures to predict allergic reactions to COVID-19 vaccines are not consistently recommended [120,127]. Because of the hypothesis of a potential contribution of PEG in allergic reactions to COVID-19 mRNA vaccines, some individuals may be offered skin testing for PEG sensitisation before vaccination [120].…”
Section: Recommendation For Covid-19 Vaccinationmentioning
confidence: 99%
“…High-molecular weight PEG seems to pose a higher risk for this adverse event [22]. Usually, type I reactions are IgE mediated, but other mechanisms of anaphylaxis have been considered as well [23,24].…”
Section: Anaphylaxismentioning
confidence: 99%
“…chilblain‐like lesions, morbilliform rashes and vasculitis) SARS‐CoV‐2 vaccines appear to have also the potential to induce a broad spectrum of cutaneous adverse events. 1 , 2 , 3 , 4 , 5 In this review article, 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , …”
Section: Introductionmentioning
confidence: 99%