It's President Biden has told reporters he feels good despite testing positive for COVID. The virus, which he's had twice before, forced him to cancel a campaign speech he was due to give in Las Vegas. The White House says Mr. Biden will self-isolate in his home state of Delaware, where he'll continue with his duties. Before his COVID diagnosis, President Biden gave a television interview saying for the first time that he would consider dropping out of the election if any of his doctors said he had a medical condition. There have been repeated calls for Mr. Biden to not run for a second term after a poor performance in the TV debate against Donald Trump. In a statement, the White House Press Secretary said, he will be returning to Delaware, where he will self isolate and will continue to carry out all of his duties fully during that time. The White House will provide regular updates on the President's status as he continues to carry out the full duties of the office while in isolation. Our first report this hour is from our North America correspondent, David Willis.

Good afternoon. Delegates were still taking their seats at an Hispanic civil rights conference when word came that the keynote speaker had had to cancel. Regrettably, I was just on the phone with President Biden, and he shared his deep disappointment at not being able to join us this afternoon. He just tested positive for COVID. Minutes later came confirmation from the White House, a statement saying President Biden was experiencing mild upper respiratory symptoms, combined with what was referred to as general malaise. He'd fallen sick after this appearance earlier in the day at a Mexican restaurant in the swing state of Nevada.

We're just getting down to game time now.

Questions about his health have dominated the campaign since his faltering debate performance three weeks ago. But speaking before the diagnosis, he suggested it would take something more serious than COVID to make him drop out of the race. If there had some medical condition, it emerged.

If doctors came to me and said, You got this problem, that problem. But I made a serious mistake in the whole debate. And look, when I originally ran, you may remember it, I said I was going to be a transitional candidate. And I thought that I'd be able to move from this, just pass it on to someone else. But I didn't anticipate things getting so, so, so divided. And quite frankly, I think the only thing age brings is a little bit of wisdom.

But calls from members of his own party for the President to step aside are fast becoming a clamor. The influential Californian congressman Adam Schiff said it was time for a passing of torch, and it's emerged that the leading Democrat in the Senate, Chuck Schumer, met Mr. Biden on Saturday in an attempt to persuade him to call it quits. Leaving Las Vegas for a spell of self-imposed isolation, the President was asked how he was feeling. How do you feel?

How do you feel?

But the thumbs up will do little to assuage many people's concerns that at 81 years of age, Joe Biden is lacking the physical and mental capacity to do the job. At a time when his rival is demonstrating what some see as almost superhuman strength, this unsteady exit speaks volumes about where the 2024 presidential race appears to be heading. David Willis, BBC News, Washington.

Well, my colleague, Katrina Perry, who's at the Republican National Convention, has more on President Biden's COVID diagnosis.

Joe Biden has not had a good run of luck, you would have to say, in campaign so far. Testing positive for COVID while he was on the campaign trail in Las Vegas, he had paused his campaigning because of that assassination attempt on Donald Trump. He wanted to give a respectful break. He took down some of his attack ads that were due to run on television and then resumed this campaigning in Nevada, another battleground state yesterday and today. He had been at an event, done an interview, and was due to appear at a large rally for Latino worker rights union, and that was canceled at very late notice. All the crowd were gathered in the venue, and one of the organizers came on stage to say that the event was canceled. Joe Biden had COVID and was going back to his home in Delaware to be in self-isolation there. Now, the White House has put out a couple of statements on this, and the White House doctor saying that he only has mild symptoms, that he has a runny nose and a cough, and he's feeling well, and he's going to continue that self-isolation in Delaware while also carrying out his presidential duties.