New insights on cause of anaphylaxis following COVID-19 vaccination

(Wiley) On the first day of the UK campaign for COVID-19 vaccination, there were reports of two cases of anaphylaxis--a severe, potentially life-threatening allergic reaction--within minutes of administration of the Pfizer/BioNTech mRNA vaccine. Subsequently further cases of suspected anaphylaxis to the Pfizer vaccine were reported. A new report published in Clinical & Experimental Allergy reveals that an allergy to the ingredient polyethylene glycol (PEG) is a cause of anaphylaxis to the vaccin...