British Prime Minister Boris Johnson announced via a Twitter video Friday morning that he has tested positive for the COVID-19 Chinese coronavirus.

UK Prime Minister Boris Johnson, file screen image.

Johnson is the first major world leader to test positive for the virus.

“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”

TRENDING: Unhinged Quebec Woman Pascale Ferrier Identified as Suspect in Case of Ricin Letter Sent to Trump White House

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

Johnson, 55, and girlfriend Carrie Symonds 31, announced last month they are engaged to be married. The couple are expecting a child this summer.

UPDATE: UK Telegraph reporter Christopher Hope via Twitter:

UPDATE ON PM’S HEALTH- Boris Johnson felt ill with mild cough and temperature yesterday and was tested late afternoon he got the results at midnight- PM is in 11 Downing Street and has now been sealed off for seven days- PM will run the UK’s Coronavirus crisis by videophone 1/ – The PM’s meals are left at doors between 10 and 11 Downing Street- Number 10 is not doing contact tracing but has advised that if anyone feels ill after seeing the PM they should self-isolate 2/ – Number 10 refuses to say whether the PM is with his pregnant girlfriend Carrie Symonds in 11 Downing Street

– PM was deliberately standing apart from Rishi Sunak -who is now working in the Treasury – when he led the applause for NHS workers at 8pm on Thursday night 3/

https://twitter.com/christopherhope/status/1243514044117594113

– The PM's meals are left at doors between 10 and 11 Downing Street

– Number 10 is not doing contact tracing but has advised that if anyone feels ill after seeing the PM they should self-isolate 2/ — Christopher Hope📝 (@christopherhope) March 27, 2020

– Number 10 refuses to say whether the PM is with his pregnant girlfriend Carrie Symonds in 11 Downing Street

– PM was deliberately standing apart from Rishi Sunak -who is now working in the Treasury – when he led the applause for NHS workers at 8pm on Thursday night 3/ — Christopher Hope📝 (@christopherhope) March 27, 2020

Thursday night, Johnson participated in a national show of support for the U.K.’s medical staff.

https://twitter.com/BorisJohnson/status/1243271386845581325