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Is the COVID-19 vaccine safe?

Three COVID-19 vaccines are available in the U.S.: Pfizer-BioNTech (Pfizer), Moderna and Johnson & Johnson/Janssen (Johnson & Johnson). Hundreds of millions of COVID-19 vaccine doses have safely been administered in the U.S.


The COVID-19 vaccines followed the same development steps as other vaccines: They were developed and tested in a laboratory and then went through clinical trials closely monitored by the FDA.


Clinical trials involve testing the vaccine in people to see if it is safe and effective. The COVID-19 vaccines were each tested on tens of thousands of people of different genders, ages, races and ethnicities who volunteered to be part of the clinical trials.




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