How do we know the Covid-19 vaccines are safe?

Updated Nov. 11, 2021

In August 2021, the Food and Drug Administration (FDA) gave full approval to the Pfizer/BioNTech Covid-19 vaccine for people ages 16 and older. With 6 months of additional data following the vaccine’s initial authorization for use, this full approval further confirms that the vaccine is safe and effective at preventing severe illness due to the coronavirus.

In November 2021, the Food and Drug Administration (FDA) extended emergency use authorization of the Pfizer/BioNTech Covid-19 vaccine to include children ages 5 to 11.