US President Joe Biden said he was "doing well" after testing positive for Covid-19 on Thursday, and the White House said he was experiencing only mild symptoms.
Mr Biden, 79, is the second US president to catch Covid-19, after Donald Trump came down with the virus before the 2020 election.
Whereas Mr Trump caught Covid before vaccines were available and ended up in hospital for three days, Mr Biden is fully vaccinated with the Pfizer jab, has had two booster shots and is now taking the antiviral drug Paxlovid that can further shorten the disease's course and reduce the risk of hospital admission.
"I'm doing well, getting a lot of work done," Mr Biden said in a video message released on Twitter.
"Thanks for your concern and keep the faith."
Press Secretary Karine Jean-Pierre said Mr Biden was "experiencing very mild symptoms" and his doctor, Kevin O'Connor, said in a letter that Mr Biden had a runny nose and "fatigue, with an occasional dry cough, which started yesterday evening".
"The president is fully vaccinated and twice-boosted, so I anticipate that he will respond favourably, as most maximally protected patients do," Dr O'Connor said.
Mr Biden, the oldest serving American president, has undergone a gruelling travel schedule in recent days, including a trip to the Middle East last week.
"Folks, I'm doing great," Mr Biden tweeted earlier, noting that he was "keeping busy" after the White House said he would continue to work in isolation.
He also apologised to leaders in Pennsylvania after cancelling a trip there.
Ms Jean-Pierre said Mr Biden “will isolate at the White House and will continue to carry out all of his duties fully during that time".
"He has been in contact with members of the White House staff by phone this morning, and will participate in his planned meetings at the White House this morning via phone and Zoom from the residence," she said.
Until now, the president had managed to dodge the virus, even as members of his inner circle caught it.
Previous waves of Covid-19 have swept through Washington’s political class, infecting Vice President Kamala Harris, Cabinet members, White House staffers and politicians. Mr Biden has increasingly stepped up his travel schedule and resumed holding large indoor events where not everyone has been tested.
When administered within five days of symptoms appearing, Paxlovid, produced by Pfizer, has been proven to bring about a 90 per cent reduction in hospital admissions and deaths among patients most likely to suffer from severe disease, the Associated Press reported.
First lady Jill Biden tested negative on Thursday morning and continued with her schedule on her trip to Detroit, Michigan. Following guidance for close contacts by the Centres for Disease Control and Prevention, she will be wearing a mask on her public outings.
The White House says Vice President Kamala Harris also tested negative on Thursday. She met Mr Biden on Tuesday and will be masked on her outings as well.
In a speech to more than 2,600 attendees at the White House Correspondents’ Association dinner on April 30, Mr Biden acknowledged the risks of attending large events but said it was worthwhile.
“I know there are questions about whether we should gather here tonight because of Covid,” he said.
“Well, we’re here to show the country that we’re getting through this pandemic.”
The US is currently experiencing a rise in coronavirus cases and hospital admissions due to the introduction of a new Omicron subvariant that has become dominant in the country and is believed to be more infectious than other variants seen in the pandemic.
CDC data shows the country currently has a seven-day average of at least 126,000 daily cases, a level not registered since February. It is also recording more than 35,000 daily hospital admissions for Covid-19.
Daily deaths counted nationally remain low but are beginning to rise. More than 1 million people have died of Covid-19 in the US.
US President Joe Biden visits Middle East – in pictures
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US President Joe Biden waves from a plane at King Abdulaziz International Airport in Jeddah. AFP -
US President Joe Biden boards a plane at King Abdulaziz International Airport in Jeddah. AFP -
Mr Biden walks to the plane. AFP -
President Sheikh Mohamed in discussion with Mr Biden during the Gulf Co-operation Council GCC+3 Jeddah Security and Development Summit. Photo: Abdulla Al Neyadi for the Presidential Court -
US President Joe Biden attends the Gulf Co-operation Council GCC+3 Jeddah Security and Development Summit at a hotel in the Saudi Arabian Red Sea coastal city. AFP -
Saudi Arabia's Crown Prince Mohammed bin Salman attends the Gulf Co-operation Council GCC+3 meeting in Jeddah. AFP -
US President Joe Biden and Saudi Arabia's Crown Prince Mohammed bin Salman at the GCC+3 Jeddah Security and Development Summit. AFP -
President Sheikh Mohamed attended a traditional summit 'family photo call' in the company of, from left: Asaad bin Tariq Al Said, Omani Deputy Prime Minister for International Relations and Co-operation Affairs and the Special Representative of the Sultan; Sheikh Mohamed; Egypt's President Abdel Fattah El Sisi; Bahrain's King Hamad bin Isa bin Salman Al Khalifa; US President Joe Biden; Saudi Crown Prince Mohammed bin Salman; Jordan's King Abdullah II; Qatar's Emir Sheikh Tamim bin Hamad Al Thani; Kuwait's Crown Prince Mishal Al Ahmad Al Jaber Al Sabah, and Iraq's Prime Minister Mustafa Al Kadhimi. AFP -
President Sheikh Mohamed is received by Saudi Arabia's Crown Prince Mohammed bin Salman upon his arrival at King Abdulaziz International Airport. Photo: Abdulla Al Neyadi for the Presidential Court -
President Sheikh Mohamed is received by Saudi Arabia's Prince Mohamed bin Salman upon his arrival at King Abdulaziz International Airport. Photo: Abdulla Al Neyadi for the Presidential Court -
President Sheikh Mohamed greets Sheikh Mishal Al Sabah, Crown Prince of Kuwait, during the GCC+3 Jeddah Security and Development Summit. Photo: Rashed Al Mansoori / Presidential Court -
US President Joe Biden and Secretary of State Antony Blinken meet Egyptian President Abdel Fattah El Sisi, Foreign Minister Sameh Shoukry and other officials during a bilateral meeting at a hotel in Saudi Arabia's Red Sea coastal city of Jeddah before the GCC+3 meeting. AFP -
US President Joe Biden meets Iraqi Prime Minister Mustafa Al Kadhimi, in Jeddah before the beginning of the GCC+3 meeting. Reuters -
Saudi Arabia's Crown Prince Mohammed bin Salman receives Sheikh Mishal Al Sabah, Crown Prince of Kuwait, before the GCC + 3 Jeddah Security and Development Summit on Saturday. SPA -
Saudi Arabia's Crown Prince Mohammed bin Salman and Egypt's President Abdel Fattah El Sisi arrive for the Jeddah summit. SPA -
US President Joe Biden participates in a working session with Saudi Crown Prince Mohammed bin Salman at Al Salam Palace in Jeddah. AP -
US President Joe Biden and US Secretary of State Antony Blinken in a bilateral meeting with Saudi officials led by Crown Prince Mohammed bin Salman at Al Salam Palace. Reuters -
Saudi Arabia's Crown Prince Mohammed bin Salman takes part in a working session with US President Joe Biden and his team. AFP -
Saudi Arabia's King Salman greets US President Joe Biden at Al Salam Palace in Jeddah. Photo: @spagov -
King Salman and US President Joe Biden in discussions at Al Salam Palace in Jeddah. Photo: @spagov -
US President Joe Biden meets Saudi Crown Prince Mohammed bin Salman in Jeddah. Photo: @spagov -
US President Joe Biden arrives at King Abdulaziz International Airport in Jeddah. Photo: @spagov -
US President Joe Biden is welcomed by Saudi Arabian officials. AFP -
Mr Biden disembarks from Air Force One at King Abdulaziz International Airport, following a flight from Tel Aviv. AFP -
US Presidents Joe Biden salutes as he boards Air Force One at Ben Gurion International Airport in Lod, near Tel Aviv en route to a meeting with the GCC+3 in Jeddah, Saudi Arabia. Reuters -
Israel's President Isaac Herzog, second right, and caretaker Prime Minister Yair Lapid, centre, bid farewell to US President Joe Biden at Ben Gurion Airport. AFP -
US President Joe Biden meets clergy at the Church of Nativity in Bethlehem, in the occupied West Bank. Reuters -
US President Joe Biden is introduced to local people at the Church of Nativity in Bethlehem. Reuters -
US President Joe Biden arrives at the Church of Nativity in Bethlehem, on the second full day of his Middle East visit. AFP -
US President Joe Biden and Palestinian President Mahmoud Abbas address the media after their meeting at the Muqataa Presidential Compound in Bethlehem, the occupied West Bank. AFP -
A photo of journalist Shireen Abu Akleh is placed on a chair as reporters wait for US President Joe Biden and Palestinian President Mahmoud Abbas to speak. She was killed in a raid by Israeli forces in May. The caption reads: 'Shireen Abu Akleh, voice of Palestine'. AP -
US President Joe Biden with Palestinian President Mahmoud Abbas at a welcome ceremony at the Palestinian Muqataa Presidential Compound in Bethlehem, in the occupied West Bank. AFP -
Palestinian President Mahmoud Abbas welcomes US President Joe Biden to the Israeli-occupied West Bank. Reuters -
A Palestinian security officer stands guard near the Church of the Nativity in Bethlehem in the occupied West Bank before US President Joe Biden’s official visit. AFP -
Palestinian and Israeli human rights campaigners lift banners during a rally near Augusta Victoria Hospital in East Jerusalem as US President Joe Binden visits. AFP -
US President Joe Biden greets fans as he attends the opening ceremony of the Maccabiah Games at Teddy Stadium in Jerusalem. AFP -
US President Joe Biden poses for a picture with US athletes competing in the Maccabiah Games. AFP -
People use the lights of their phones during the opening ceremony of the Maccabiah Games in Jerusalem, attended by US President Joe Biden. Reuters -
US athletes attend the opening ceremony of the Maccabiah Games in Jerusalem. AFP -
The Maccabiah Games coincided with the US President Joe Biden's visit to the Middle East. AFP -
US President Joe Biden, centre, Israel's caretaker Prime Minister Yair Lapid, right, and President Isaac Herzog attend the opening ceremony for the Maccabiah Games in Jerusalem. Reuters -
A Palestinian protester carries a placard during a demonstration in the occupied West Bank city of Ramallah as US President Joe Biden visited Israel. AFP -
In Gaza City, Palestinian demonstrators wave their national flag as they gather to protest against the visit by US President Joe Biden to Israel. AFP -
A billboard, part of a campaign organised by the Centre for Human Rights B'Tselem, installed before US President Joe Biden's arrival for an official visit in the West Bank city of Bethlehem. PA -
US President Joe Biden receives the Israeli Presidential Medal of Honour from Israeli President Isaac Herzog in Jerusalem. AP Photo -
US President Joe Biden, centre left, and President Isaac Herzog with children after Mr Biden's arrival at the presidential residence in Jerusalem. AFP -
US President Joe Biden signs the guest book in the presence of President Isaac Herzog on arriving at the presidential residence in Jerusalem. AFP -
US President Joe Biden with President Isaac Herzog and Mrs Michal Herzog in Jerusalem. AFP -
US and Saudi Arabian flags in a square in Jeddah, Saudi Arabia, before US President Joe Biden's visit. AP -
US President Joe Biden and caretaker Israeli Prime Minister Yair Lapid at a press conference at the Waldorf Astoria Hotel in Jerusalem. EPA -
President Sheikh Mohamed delivers the opening speech during the I2U2 summit, a meeting between the leaders of the UAE, India, Israel and the US. Seen with Sheikh Abdullah bin Zayed, UAE Minister of Foreign Affairs and International Co-operation. Photo: Presidential Court -
President Sheikh Mohamed speaks with Indian Prime Minister Narendra Modi, US President Joe Biden and Israeli Prime Minister Yair Lapid during the I2U2 summit. Photo: Presidential Court -
US President Joe Biden and caretaker Iraeli Prime Minister Yair Lapid address a joint press conference. AFP -
US President Joe Biden and Israeli caretaker Prime Minister Yair Lapid during their meeting at a hotel in Jerusalem. AFP -
US President Joe Biden speaks to Holocaust survivors Dr Gita Cycowicz and Rena Quint in the Hall of Remembrance, at Yad Vashem in Jerusalem. AP -
US President Joe Biden participates in a wreath-laying ceremony in the Hall of Remembrance at Yad Vashem Holocaust Remembrance Centre in Jerusalem. AP -
Israel's President Isaac Herzog speaks with US Secretary of State Antony Blinken and US President Joe Biden during their visit to Hall of Remembrance at Yad Vashem Holocaust Remembrance Centre in Jerusalem. Reuters -
Israeli Defence Minister Benny Gantz, left, US President Joe Biden, second left, caretaker Prime Minister Yair Lapid, right, and Brig Gen Shawn Harris, defence attache to the US embassy, in front of Israel's Iron Dome defence system during a tour at Ben Gurion Airport. AP -
US President Joe Biden waves as he leaves Israel's Ben Gurion Airport on his way to Jerusalem. EPA -
US President Joe Biden, centre, stands for the national anthems alongside Secretary of State Antony Blinken, second left, Israel's President Herzog, third left, caretaker Prime Minister Yair Lapid, third right, and departing prime minister Naftali Bennett, second right, at Ben Gurion Airport. AFP -
Caretaker Israeli Prime Minister Yair Lapid and President Isaac Herzog welcome US President Joe Biden to Israel as his trip begins. Reuters
