Britain's Johnson in self-isolation; has no virus symptoms

British Prime Minister Boris Johnson began self-isolating on Sunday, after being told he had come into contact with someone who tested positive for COVID-19.

Johnson, who was hospitalised after contracting the virus in April, does not currently have any symptoms of COVID-19, and plans to continue working from Downing Street, according to an official statement.

He was notified by the National Health Service's Test and Trace system on Sunday, after he met with a group of lawmakers on Thursday, one of which tested positive for coronavirus.

The statement didn't say how long Johnson plans to isolate, but UK health authorities' guidance is that anyone contacted by Test and Trace should quarantine for 14 days.

In September Johnson warned of a second wave of coronavirus in the UK, and had earlier this month cautioned British citizens not to become complacent with social distancing measures following news that pharmaceutical giant Pfizer may have potentially developed an effective vaccine.