The United States had administered 395,934,825 doses of COVID-19 vaccines in the country as of Sunday and distributed 478,410,525 doses, the US Centers for Disease Control and Prevention (CDC) said.
Those figures are up from the 394,690,283 vaccine doses that the CDC said had gone into arms by Saturday out of 478,362,045 doses delivered.
The agency said 215,233,625 people had received at least one dose while 185,492,579 people had been fully vaccinated as of 6:00 am on Sunday.
The CDC tally includes two-dose vaccines from Moderna and Pfizer/BioNTech, as well as Johnson & Johnson's one-shot vaccine.
About 5.3 million people have received an additional dose of either Pfizer or Moderna's vaccine since 13th August, when the US authorized a third dose of the vaccines for people with compromised immune systems who are likely to have weaker protection from the two-dose regimens.