I just cite the FDA's EUA. This is literally trusting the government and yet I'm still called an anti-vax conspiracy theorist. The following text comes straight from the Pfizer EUA published by the FDA. > The Pfizer-BioNTech COVID-19 Vaccine is an unapproved vaccine that may prevent COVID-19. There is no FDA-approved vaccine to prevent COVID-19. Oh, and you may have a severe allergic reaction, or something unknown since it's still being studied.... > Signs of a severe allergic reaction can include: > • Difficulty breathing > • Swelling of your face and throat > • A fast heartbeat > • A bad rash all over your body > • Dizziness and weakness > These may not be all the possible side effects of the Pfizer-BioNTech COVID-19 Vaccine. Serious and unexpected side effects may occur. Pfizer-BioNTech COVID-19 Vaccine is still being studied in clinical trials.