The US Food and Drug Administration has delayed granting full approval of Novavax’s Covid-19 vaccine despite it being on track to be cleared until Tuesday afternoon, a person familiar with the situation told CNN.

The agency is sitting on a decision to grant full approval for Novavax’s shot, days after top vaccine regulator pushed out.

The U.S. Food and Drug Administration has missed its deadline for making a decision on traditional approval for Novavax's COVID-19 vaccine, a source familiar with the matter told Reuters on Wednesday.