While allergic reactions occurred in less than one percent of those receiving the COVID vaccine, it is important to note that individuals with a “history of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g., anaphylaxis) to any component of the study intervention(s)” were excluded from Pfizer’s clinical trials.”

James Odell, OMG, ND, L.Ac. COVID-19 mRNA Vaccines. Bioregulatory Medicine Institute. 28 December 2020. https://www.biologicalmedicineinstitute.com/post/covid-19-mrna-vaccines.