The British Prime Minister, Boris Johnson, has tested positive for the new coronavirus.

Johnson was tested for COVID-19 on Thursday after showing "mild symptoms," the CNBC reported.

"The test was carried out in No. 10 Downing Street by NHS staff and the result of the test was positive," spokesman for No 10 said. "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," the spokesman added.

Johnson confirmed his diagnosis in a tweet this morning.

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 pic.twitter.com/9Te6aFP0Ri

— Boris Johnson #StayHomeSaveLives (@BorisJohnson) March 27, 2020

"I’ve developed mild symptoms of the coronavirus, that is to say, a temperature and a persistent cough," Johnson said in a video he posted.

"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," Johnson said.