British Prime Minister Boris Johnson gives a press conference about the ongoing situation with the coronavirus outbreak inside 10 Downing Street in London, March 17, 2020. (MATT DUNHAM / AP)

British Prime Minister Boris Johnson said on Friday he had tested positive for coronavirus and was self-isolating at Downing Street but would still lead the government’s response to the accelerating outbreak.

Johnson, 55, experienced mild symptoms on Thursday, a day after he answered at the prime minister’s weekly question-and-answer session in parliament’s House of Commons chamber, and received the positive test result at around midnight.

“I’ve taken a test. That has come out positive,” Johnson said on Friday in a video statement broadcast on Twitter. “I’ve developed mild symptoms of the coronavirus. That’s to say - a temperature and a persistent cough.

“So I am working from home. I’m self-isolating,” Johnson said. “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.”

I’ve developed mild symptoms of the coronavirus. That’s to say - a temperature and a persistent cough. So I am working from home. I’m self-isolating

Boris Johnson, Prime Minister, UK

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British health minister Matt Hancock said later on Friday morning that he has also tested positive and is self-isolating at home with mild symptoms.

Hancock said that "thankfully my symptoms are mild" and he is working from home. 

The health secretary said he had received medical advice to take a test after experiencing "mild symptoms", but would "hopefully" be able to end his self-isolation period next Thursday.

He tweeted that it is "vital we follow the advice to protect our NHS (National Health Service) & save lives."

Johnson is the first leader of a major power to announce a positive test result for coronavirus. Canadian Prime Minister Justin Trudeau went into isolation earlier this month after his wife tested positive for the virus.

US President Donald Trump and German Chancellor Angela Merkel have both been tested, so far with negative results.

Johnson chaired a government meeting on the coronavirus on Friday morning via teleconference.

“Coronavirus can and does affect anyone. Everyone be safe. Our own health depends on everybody else,” said Jeremy Corbyn, leader of the opposition Labour Party, in a message wishing Johnson a speedy recovery.

It was not immediately clear how many Downing Street staff and senior ministers would need to isolate themselves given that many have had contact with Johnson over recent days and weeks.

So far, there have been more than 11,600 confirmed cases of the illness in Britain.

After being criticised by some lawmakers, doctors and scientists for not adopting more stringent measures earlier to curb the spread of the illness, Johnson has increasingly become the face of Britain’s response to the pandemic, which he has likened to fighting a war.

Britain is currently on lockdown, with schools closed to most pupils and people told to work from home where possible and venture out only for food shopping and exercise.

Johnson has chaired some of the government’s daily press conferences, but will now have to step back, his spokesman said, repeating that Johnson, his team and ministers were all adhering to the guidelines set out by the National Health Service.

The moment Johnson felt symptoms he took steps to avoid close contact with anyone, a spokesman said, adding that ministers would need to self-isolate if they developed symptoms. The spokesman was unaware of further testing among senior ministers.

The official guidance is for people to stand two metres (6.5 feet) apart to prevent contagion. This was not always adhered to for some of Johnson’s earlier press conferences when he appeared with other top officials, although the distance between lecturns has seemed to have increased.

Meals at the door

Johnson will have his meals delivered to the door of an apartment at Number 11 Downing Street, while he self-isolates for seven days from the warren of corridors and rooms that make up the seat of British political power at Number 10 Downing Street.

“The doors between Number 10 and Number 11 have been closed off to all other staff who work in the building,” a Downing Street spokesman said. “The PM will work from the office and the study in Number 11.”

His finance minister, Rishi Sunak, who traditionally works out of Number 11 Downing Street, is not self-isolating, a Treasury source said.

Britons paid tribute to health workers on Thursday evening, clapping and cheering from doorways and windows. Johnson and Sunak took part, but came out of separate entrances on Downing Street and did not come into close contact, according to a Reuters photographer at the scene.

It was not immediately clear whether Johnson’s 32-year-old partner, Carrie Symonds, who is pregnant, had been tested.

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Queen in good Health

Queen Elizabeth last saw Johnson on March 11 and she remains in good health, Buckingham Palace said. The 93-year-old monarch usually sees the prime minister once a week but has recently conducted the regular audience by telephone.

“The queen last saw the PM on the 11th March and is following all the appropriate advice with regards to her welfare,” a palace spokesman said.

Prince Charles, the 71-year-old heir to the British throne, tested positive for coronavirus earlier this week. He is in good health and is now self-isolating at his residence in Scotland with mild symptoms along with his wife Camilla, who tested negative, his office said.

With Xinhua inputs