US President Donald Trump says he has reversed a plan for White House officials to receive a coronavirus vaccine in the coming days.
Officials said senior members of the Trump administration would be among the first to get the Pfizer/BioNTech jab.
But Mr Trump later tweeted that people working at the White House “should receive the vaccine somewhat later… unless specifically necessary”.
The US will begin its roll out of the vaccine on Monday.
The vaccine offers up to 95% protection against Covid-19.
The first three million doses are 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.