North Korea remains totally free of the coronavirus, a senior health official in Pyongyang has insisted, despite mounting scepticism overseas as confirmed global infections near one million, according to AFP.

The already isolated North quickly shut down its borders in January after the virus was first detected in neighbouring China, and imposed strict containment measures.

Pak Myong Su, director of the anti-epidemic department, said: "We have carried out preemptive and scientific measures such as inspections and quarantine for all personnel entering our country and thoroughly disinfecting all goods, as well as closing borders and blocking sea and air lanes."