Over the last 24 hours I have developed mild symptoms and tested positive for coronavirus.
I am now self-isolating, but I will continue to lead the government’s response via video-conference as we fight this virus.
Together we will beat this. #StayHomeSaveLives
He made his statement shortly before health secretary Matt Hancock, who is overseeing the NHS’s response to the outbreak, confirmed he has also been infected.
Johnson said: “I have developed mild symptoms of the coronavirus, that’s to say a temperature and persistent cough.
“On the advice of the chief medical officer I have taken a test that has come out positive.
“But be in no doubt that I can continue, thanks to the wizardry of modern technology, to communicate with all my top team to lead the national fightback against coronavirus.”
A Downing Street spokeswoman said: “After experiencing mild symptoms yesterday, the prime minister was tested for coronavirus on the personal advice of England’s chief medical officer, professor Chris Whitty.
“The test was carried out in Number 10 by NHS staff and the result of the test was positive.
“In keeping with the guidance, the prime minister is self-isolating in Downing Street.
“He is continuing to lead the government’s response to coronavirus.”
Johnson was in Parliament as recently as Wednesday, when he carried out an extended Prime Minister’s Question Time.