United Kingdom Prime Minister Boris Johnson said on Fridaythat he tested positive for the coronavirus.

"I've developed mild symptoms of the coronavirus, that is to say, a temperature and a persistent cough," Johnson said in a video message posted on Twitter. "I am now self-isolating, but I will continue to lead the government's response via video-conference as we fight this virus," he added.

The news comes several days after Prince Charles, the heir to the British throne, was diagnosed with COVID-19.

Earlier this week, Johnson and Queen Elizabeth II held their weekly meeting over the telephone as she went into isolation following her son's positive test.