Senior members of the Trump administration will be among the first people to be vaccinated against coronavirus in the US, officials say, BBC reported.
The officials said some White House staffers are expected to be given the Pfizer/BioNTech vaccine this week.
But on Sunday, President Donald Trump said early vaccinations would only be offered in specific cases.
The vaccine offers up to 95% protection against Covid-19 and was deemed safe by US regulators on Friday.
The first three million doses of the vaccine are currently being distributed to dozens of locations in all 50 states across the US.
The first shipment of those doses left a facility in Michigan on Sunday, with health workers and the elderly in line to receive the first shots as early as Monday.
Coronavirus deaths have been rising sharply since November in the US, with a world-record daily increase of 3,309 reported on Saturday.
But the vaccine's roll-out has been framed as a turning point in the coronavirus pandemic, which has taken the lives of almost 300,000 people in the US.
The Food and Drug Administration (FDA) said its emergency-use authorisation of the vaccine, announced on Friday, was a "significant milestone" in the pandemic, after coming under intense pressure from the Trump administration to approve the jab.
A mass inoculation drive using doses of the same vaccine has already begun in the UK. The Pfizer vaccine has received regulatory approval in Canada, Bahrain and Saudi Arabia as well.
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