The authors describe Taiwan's successful strategy in achieving control of COVID-19 without economic shutdown, despite the prediction that millions of infections would be imported from travelers returning from Chinese New Year celebrations in Mainland China in early 2020. As of September 2, 2020, Taiwan reports 489 cases, seven deaths, and no locally acquired COVID-19 cases for the last 135 days (greater than four months) in its population of over 23.8 million people. Taiwan created quasi population immunity through the application of established public health principles. These non-pharmaceutical interventions, including public masking and social distancing, coupled with early and aggressive identification, isolation, and contact tracing to inhibit local transmission represent a model for optimal public health management of COVID-19 and future emerging infectious diseases. © 2020 Society for Disaster Medicine and Public Health, Inc.