ABSTRACT: Country-led control measures to contain the spread of the novel coronavirus, COVID-19, have been diverse. Originating in Wuhan, China, in December, 2019, the COVID-19 outbreak was declared a pandemic by WHO on March 11, 2020. In recognition of the severity of the outbreak, and having the longest shared border with China, the Government of Mongolia activated the State Emergency Committee in January, 2020, on the basis of the 2017 Disaster Protection Law. As a result, various public health measures have been taken that led to delaying the first confirmed case of COVID-19 until March 10, 2020, and with no intensive care admissions or deaths until July 6, 2020. These measures included promoting universal personal protection and preventions, such as the use of face masks and handwashing, restricting international travel, suspending all training and educational activities from kindergartens to universities, and banning major public gatherings such as the celebration of the national New Year holiday. These measures have been accompanied by active infection surveillance and self-isolation recommendations. The Mongolian case shows that with robust preventive systems, an effective response to a pandemic can be mounted in a low-income or middle-income country. We hereby examine the emergency preparedness experience, effectiveness, and challenges of the early outbreak policies on COVID-19 prevention in Mongolia, as well as any unintended consequences.