Analysis of information sources in references of the Wikipedia article "การระบาดทั่วของโควิด-19 ในประเทศเกาหลีเหนือ" in Thai language version.
Cumulatively 37 291 persons have been tested with reverse transcription polymerase chain reaction (RT-PCR) at an interval of 10 days (total samples: 74 308) and all were found negative for COVID -19. These include 665 persons who were tested during the period of 12-19 August 2021, of which 97 were people with influenza-like illness and/or severe acute respiratory infections and rest 568 were health care workers.
