The COVID-19 pandemic has stretched limited public health resources beyond measures, particularly at the local level. What started as an interesting report of pneumonia of unknown etiology in late December 2019 in Wuhan, China, bloomed into an international crisis by mid-January 2020. However, it was not until late January, when the first case was reported in the United States, that a new reality took shape for US public health agencies. After all, severe acute respiratory syndrome never made it to this country, and the only 2 cases of Middle East respiratory syndrome here were imported and never spread. Local public health agencies are notoriously short-staffed and underfunded. Therefore, when a crisis looms, personnel from a multitude of areas within the agencies are called upon to help out. Under its innovative and forward-thinking leadership, the St. Louis County Department of Health internally implemented the Incident Command System, a component of the National Incident Management System. While reassignment of individuals to new responsibilities under a new and temporary reporting structure did not always go perfectly, ICS kept its promise to be adaptable to a fast-evolving situation, to clearly outline needed areas of responsibility, and to provide scaffolding that kept the Department of Health functional in chaotic times. It was able to be implemented quickly within hours of the first confirmed COVID-19 case in St. Louis County and enhanced the quality and timeliness of the public health response. This experience is being shared to provide a model of how organizations with limited personnel can use the Incident Command System to reorganize and meet unexpected challenges with increased success.

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