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FILE - In this Feb. 5, 2021, file photo, a staff member, right, of the Pongnam Noodle House disinfects the hands of a woman coming into its restaurant in Pyongyang, North Korea. Isolated North Korea has continued to claim a perfect record in keeping out the coronavirus in its latest report to the World Health Organization, on Wednesday, April 7, 2021. At the beginning of the pandemic more than a year ago, North Korea shut its borders and described its efforts to keep out the virus as a “matter of national existence.” It banned tourists, jetted out diplomats and still severely limits cross-border traffic while quarantining tens of thousands of people who have shown symptoms. (AP Photo/Jon Chol Jin, File)