Trump has mild COVID-19 symptoms - chief of staff

"He continues to be not only in good spirits, but extremely energetic. We talked a number of times this morning," Meadows told reporters at the White House, adding: "I fully expect that as this virus continues to go on, other people in the White House will certainly have a positive test result."

On Thursday night, shortly after Trump predicted the pandemic's end was in sight, news broke that Hope Hicks, a top adviser and trusted aide, had tested positive for the virus. Hicks traveled with the president on Air Force One on Tuesday and Wednesday.

Trump flew to New Jersey after White House officials learned of Hicks’s symptoms, and attended a fundraiser at his golf club and delivered a speech. Trump was in close contact with other people, including campaign supporters, at a roundtable event.

Trump, who has played down the threat of the coronavirus pandemic from the outset, said he and his wife Melania had tested positive for the deadly virus and were going into quarantine. Their son Barron had tested negative, a White House official said.

"We will begin our quarantine and recovery process immediately. We will get through this TOGETHER!" Trump said in a tweet early on Friday morning.

The president's illness upended his re-election campaign with just 31 days left to go until the presidential election.