Mass testing for COVID-19 in Ulaanbaatar, Mongolia: “One door-one test” approach

Abstract

Mongolia responded quickly when Asian countries were first hit by COVID-19 in early 2020. On March 10, 2020, the first COVID-19 case, originating from abroad, was confirmed in Mongolia [1]. But no local transmissions were recorded until November 10, 2020. By February 9, 2021, Mongolia had registered a total of 2,120 confirmed COVID-19 cases with the vast majority (60·57%) reported in Ulaanbaatar [2], the nation's capital with a population over 1·5 million.