PEG allergy has become an important topic since the COVID-19 vaccine rollout. There are 2 messenger RNA vaccines that have been approved in multiple countries around the world. Pfizer Covid Vaccine and Allergy Moderna Covid Vaccine and Allergy There are 3 adenovirus vector vaccines as well. Johnson and Johnson Covid Vaccine and Allergy Since the vaccine … Continue reading PEG Allergy and Vaccine Allergy