Scientists are eyeing a potential culprit causing the allergic reactions to the Pfizer Inc. and BioNTech SE Covid-19 vaccine: the compound polyethylene glycol, also known as PEG. In a statement, Pfizer said it “will closely monitor all reports suggestive of serious allergic reactions following vaccination." That makes it hard to tell how allergic reactions to the PEG in the Covid-19 vaccines will compare to allergic reactions to other PEGs, like those in certain laxatives, that have caused rare allergic reactions in the past. Both he and Dr. Phillips recently attended a virtual meeting hosted by the National Institute of Allergy and Infectious Diseases to discuss the Covid-19 vaccine allergic reactions. The FDA requires that appropriate medical treatment for allergic reactions be immediately available in the event of an acute, anaphylactic reaction.

Source: Mint December 26, 2020 01:18 UTC