rich01
Well-known member
https://thehill.com/policy/healthca...ctions-to-pfizer-vaccine-reported-in-multipleMarks said the FDA was not certain what caused the reactions but indicated a chemical called polyethylene glycol, which is present in the vaccines produced by Pfizer and BioNTech as well as by Moderna “could be the culprit.” He added that the reaction some people have experienced could be more common than once thought.