Assistant Secretary of Defense for Health Affairs Thomas McCaffery said that members of the DoD could be vaccinated within two days of the vaccine's approval for use.
President Donald Trump has touted the vaccine's development as a historic achievement, but a recent poll found he ranked last on a list of 10 sources for trustworthy information about the vaccine.
Health Canada has approved the Pfizer vaccine, and the first doses will arrive in the country next week.
Speaking on CBS This Morning, he rebuked Biden administration claims that the government doesn't have a plan for distribution, saying that in the meeting the Trump administration laid out "in minute detail how we would ship the vaccine."
Campaigners say wealthier nations have bought enough doses to vaccinate their entire populations nearly three times over.
Though the Tuesday event was about vaccines, President Donald Trump repeatedly implored for someone to have the "courage" to help him stay in power.
According to the White House, the order directs the Secretary of Health and Human Services to provide priority access to COVID-19 vaccines to Americans.
Biden said he will issue a mask mandate for all federal buildings, planes, trains and buses during his first 100 days in office.
"I think it's nuts to bring that into the Senate," Senator Mitt Romney said.
But Dr. Moncef Slaoui said it's "very concerning" that a large portion of Americans appear to be skeptical about vaccine efficacy and safety.
No hospitalizations or severe diseases have been reported by volunteers who took the vaccine.
The company has entered into agreements to supply other countries since it reported promising results for its vaccine contender, Scott Gottlieb, the head of the Food and Drug Administration (FDA) said.
Russian President Vladimir Putin announced a mass vaccination program across the country as it fights the COVID-19 pandemic.
President-elect Biden and three former presidents have said they would get vaccinated publicly amid a climate of fear surrounding the safety of the shots.
Margaret Keenan said being the first person in the U.K. to get a COVID shot outside a clinical trial was "the best early birthday present I could wish for."
"I think if we use the vaccine correctly we can get back to normal within two months," Jay Bhattacharya, a professor at Stanford University Medical School said. "Let's say, if we have 50 million people vaccinated, who are at the highest risk, at that point we can open society up."
Dr Jane M. Orient has been vocal in her criticism over coronavirus vaccines, instead opting to promote "medical freedom" and the anti-malaria drug hydroxychloroquine as an alternative treatment.
After Minnesota Republican legislative leaders suggested people working in the state capitol be considered essential and receive the COVID vaccine early, a Democratic state representative said other workers should be given priority.
Major pharmaceutical companies have had success in developing vaccines that could help fight the pandemic.
In an interview with Reuters, FDA Commissioner Stephen Hahn was asked if it was realistic for the White House to say that 20 million people will receive a COVID-19 vaccine before the end of 2020.
Despite the increase in positive public sentiment, a majority of Americans still say they would be uncomfortable being among the first to take a vaccine.
The 27-year-old "Black Panther" star is facing criticism for posting an anti-vaccination video on her Twitter account.
Vaccines will have zero effectiveness for those who won't have access them or won't be able to afford them—which is bad enough. But this will also endanger the rest of us. We need a People's Vaccine.
"I promise you that when it's been made for people who are less at risk, I will be taking it," the former president said.
Ten million doses of the vaccine are expected to arrive in the U.K. before the end of the year.
The Russian president gave the instruction to his deputy prime minister Tatyana Golikova, telling her "let's take that first step."
About 1,700 online pharmacies suspected of selling illicit medicines and medical devices contained cyber threats, according to analysis by the international crime-fighting organisation.
Two vaccines in Phase III trials are expected to be reviewed for emergency use in December.