Coronavirus disease 2019 (COVID-19) can significantly tax hospitals and disproportionately affect Medicare beneficiaries. COVID-19 can affect much of a State or a locality at the same time, rapidly increasing the demand for hospital resources. Using Medicare claims data, this review will analyze the effects of COVID-19 on hospitalized Medicare beneficiaries and the hospital resources needed to care for them. Specifically, it will review utilization of the treatments provided and paid for by Medicare for patients with COVID-19 in selected localities that have known outbreaks. It will also describe the extent to which hospital utilization for Medicare beneficiaries changed over time.