Boris Johnson tests positive for coronavirus

British Prime Minister Boris Johnson says he has tested positive for the coronavirus (koronavirus, in Finnish).

Johnson said in a tweet that he has “developed mild symptoms” and is self-isolating.

"On the advice of the chief medical officer, I have taken a test and that has come out positive."

"I'm working from home and self-isolating. That's entirely the right thing to do."

"I can continue, thanks to the wizardry of technology, to communicate with my top team and lead the national fightback against the virus."