North Korea called for tougher and more thorough countermeasures to keep citizens safe from the fast-spreading coronavirus at a meeting where leader Kim Jong-un presided, state media said on Sunday.North Korea continues testing for the virus, with more than 500 people in quarantine, but has no confirmed infections yet, a country representative of the World Health Organisation told Reuters.Officials in Pyongyang and its state media have repeatedly insisted that the North remains totally free of…