Since 15 November, the State Emergency Commission (SEC) has identified a total of eight clusters of COVID-19 transmission: two in Ulaanbaatar City and one in Selenge, Darkhan-Uul, Gobisumber, Orkhon, Dornogobi and Arkhangai provinces respectively. The clusters are linked with close and secondary contacts of an index case of COVID-19. The government has taken swift action including contact tracing, the immediate testing of identified contacts, the isolation of contacts, quarantine, and treatment of positive cases.