New Delhi: North Korea declared its first Covid-19 outbreak and imposed a nationwide curfew, with state media saying that a sub-variant of the highly transmissible Omicron virus had been discovered in Pyongyang. “The country’s largest emergency crisis occurred in February 2020, with a hole in our emergency quarantine front that has been held safe for the previous two years and three months,” the official KCNA news agency reported. The article stated that persons in Pyongyang had contracted the Omicron form, but did not provide case numbers or likely infection sources. The samples from the sick patients were taken on May 8, according to the report. The report was released as North Korean leader Kim Jong Un presided over a Workers’ Party conference to discuss the first coronavirus epidemic.