A, There was a 5-month reduction in thoracic surgical volume at the beginning of the COVID-19 pandemic in south Florida, with monthly caseloads approximately 50% of the pre-COVID-19 period volume. This was followed by a robust recovery of monthly surgical volume averaging 110% of pre-COVID-19, starting in August 2021. This is in contrast with the profound (averaging 30% of pre-COVID-19 monthly volume) but very brief (2 months) reduction of overall surgical caseload of the entire health system. B, Detailed analysis of the effect of operative service closures on 6 representative surgical subspecialties (colorectal surgery, head-neck oncology surgery, surgical oncology, neurological surgery, vascular surgery, cardiac surgery) in addition to thoracic surgery. Similar to thoracic surgery, the cardiac surgery service had a rather protracted course to full recovery whereas other service lines fully recovered by June 2020. C, The effect of COVID-19 on University of Miami Health System thoracic surgery cases compared with thoracic surgery outpatient clinics, diagnostic radiology, nuclear medicine, and pulmonary function laboratory for pre-COVID-19 and COVID-19 cohorts. Surgical cases, procedures, and thoracic clinic visits for each month throughout the study period were calculated as percentages of the respective average of monthly numbers of the 2019 calendar year. COVID-19, Coronavirus disease-19; CT, computed tomography; PET, positron emission tomography.