Table 1.

COVID-19 vaccines FDA-approved for emergency use in the USA as of June 14, 2021

	Initial FDA authorisation date	Vaccine type	Number of doses for full immunisation	Age for which use was approved
Pfizer-BioNTech*	Dec 11, 2020	mRNA	Two	12 years and older
Moderna	Dec 18, 2020	mRNA	Two	18 years and older
Janssen (Johnson & Johnson)	Feb 27, 2021	Viral vector (adenovirus type 26)	One	18 years and older

FDA=US Food and Drug Administration.

^*The Pfizer-BioNTech vaccine received full FDA approval on Aug 23, 2021.