Characteristics of Patients with Persistent COVID-19 Symptoms and Unscheduled Return Visits to a Centre for COVID-19 Evaluation.

This retrospective study aimed to evaluate the characteristics of patients with long COVID syndrome. This study included 457 adults who had at least one persistent symptom after COVID-19 infection. The median time interval between the last SARS-CoV-2 infection and emergency room presentation was 3 months.