CDC: Information about COVID-19 coronavirus vaccines for people with allergies

If you are allergic to an ingredient in a COVID-19 vaccine:  If you have had a severe allergic reaction or an immediate allergic reaction—even if it was not severe—to any ingredient in an mRNA COVID-19 vaccine, you should not get either of the currently available mRNA COVID-19 vaccines (Pfizer-BioNTech and Moderna).  More...