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Study Reveals Cause of Anaphylaxis After COVID-19 Vaccination

by Angela Mohan on April 7, 2021 at 11:57 AM

Allergy to the ingredient polyethylene glycol (PEG) is the cause of anaphylaxis to COVID-19 vaccination, as per the report published in Clinical & Experimental Allergy.


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.

‘PEG allergy is rare and COVID-19 vaccine remain safe. Public should take COVID-19 vaccination without hesitation.’

Subsequently further cases of suspected anaphylaxis to the Pfizer vaccine were reported. The authors note that very few people are allergic to PEG, and they provide a guide to identifying those who are at risk.

"This preliminary report confirms PEG as a cause of anaphylaxis to the Pfizer/BioNTech vaccine, for the first time," they wrote. "COVID-19 vaccine anaphylaxis and PEG allergy are both rare, so proof of PEG as the cause in one case of vaccine anaphylaxis is important.

However, it is important to emphasize that PEG allergy is rare and that COVID-19 vaccines remain safe."



Source: Eurekalert

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