On Thursday, Trump said that he and the first lady had begun a quarantine and were awaiting the results of a coronavirus test after White House adviser Hope Hicks tested positive for the virus. First Lady Melania Trump has also tested positive, he said, adding they will start the quarantine process immediately. If symptoms, such as trouble breathing, get worse, the CDC says to seek emergency medical care immediately. Mr Trump said on Twitter.
President Trump is 74, which makes him part of the higher risk population.
Wearing a mask became a campaign and political issue in the USA, with Trump rallies and events filled with people who wouldn't wear masks.
The president has been using large rallies to try to change the subject from his much criticized Covid-19 response, vowing in a speech just Thursday that "the end of the pandemic is in sight".
Ms Hicks had accompanied Mr Trump to OH for the presidential debate on Tuesday and to Minnesota for a campaign event on Wednesday. Who knows", he said, adding "I spend a lot of time with Hope.
"We'll see what happens". In it, the president said: "Tonight, @FLOTUS and I tested positive for COVID-19".
Trump's reelection campaign said it was putting on hold all events featuring Trump and members of his family but that Pence would resume campaigning since he tested negative. Reuters, meanwhile, reports the president as "not incapacitated", and that he will be working from the White House residence.
In February, shortly after the end of his impeachment trial, Mr Trump re-hired Ms Hicks to serve as an adviser. Public health professionals say mask-wearing is key to helping to prevent the virus from spreading.
Hicks is the most senior White House aide announced to have contracted COVID-19.
Biden paid almost $300,000 in federal income taxes in 2019
The returns will be the 22nd year of returns that Biden has publicly released and the 15th year for Harris. Biden refused a request to have a third party inspect the candidates' ears before Tuesday's debate.
"He went in and we were insisting that the people we had in the ground in China should be able to go to Wuhan and determine for themselves how unsafe this was", Biden said, "He did not even ask Xi to do that".
On September 30, when Biden and Trump participated in the first debate in OH, the former questioned the incumbent's handling of the pandemic, suggesting that he should have brought Republicans and Democrats together to form a strategy. We can evict President Trump from the territory he has forcibly seized in our minds.
Hicks was in close proximity with Trump this week, traveling aboard Air Force 1 to and from the presidential debate Tuesday night.
Trump, who is rarely ever seen wearing a mask, claims it's far too hard to social distance because people are always coming up to him to express their thanks for his governance. He spoke at a similar indoor gathering in Arizona the next day.
The Trumps are isolating at the White House. She isolated herself after feeling unwell on the trip back, and tested positive Thursday.
Trump had been traveling and campaigning, and it is not known how many people he has come into contact with.
The Centers for Disease Control and Prevention recommends that those who test positive should self-isolate, monitor symptoms and wear a mask when around other people. The Food and Drug Administration revoked emergency approval for the drug as a Covid-19 treatment a month later, citing a lack of effectiveness and harmful potential side effects.
Trump later tweeted that he and the first lady will begin isolating until they receive their results. All of them survived, though Mr Johnson became seriously ill.