Who should not take the Pfizer-BioNTech COVID-19 vaccine?

Who should not take the Pfizer-BioNTech COVID-19 vaccine?

If you have had a severe allergic reaction to any ingredient in the Pfizer-BioNTech COVID-19 vaccine (such as polyethylene glycol), you should not get this vaccine. If you had a severe allergic reaction after getting a dose of the Pfizer-BioNTech COVID-19 vaccine, you should not get another dose of an mRNA vaccine. 5 days ago