Pfizer and Moderna Covid19 Vaccine Additive, Polyehtylene Glycol May Cause Rare Allergic Reaction
Channel: Philip Andrew
Date: 10/12/2020

Pfizer and Moderna Covid19 vaccines contain the additive Polyehtylene Glycol (PEG) that may a cause rare allergic reaction.  The Pfizer trial excluded people with severe allergies so only two adverse reactions were detected during the trial.  The same may not be true during mass vaccination.
  
(Source: ABC Australia, Vic - 10 Dec 2020)