The U.S. Food and Drug Administration has granted emergency use authorizations for three COVID-19 vaccines so far. We compare the different available shots, and several still in the approval process for use in the Untied States.
Which vaccines are approved already?
The Pfizer-BioNTech and Moderna vaccines have been available to Americans since December.
A vaccine developed by Janssen Pharmaceuticals, a Johnson & Johnson company, was authorized in late February.
AstraZeneca, working in collaboration with Oxford University, is expected to request authorization from the FDA for their vaccine within a few weeks, and Novavax is expected to follow with its application later in April or May.