A North Korean public health expert said no person has been infected with a new pneumonia-causing coronavirus in the country so far, as the nation has stepped up measures to prevent an expansion of it.In an attempt to detect possible infection in an early stage, North Korea has conducted screening for all citizens, Pak Myong Su, president of North Korea's State Hygienic Control Board said in a recent interview with Kyodo News.Pak said that large-scale gatherings have been also restricted in the country, given that people may become infected as they come into contact with others.North Korea …READ FULL ARTICLE