To answer the many puzzling questions about long COVID, researchers at Boston University’s School of Medicine and Boston Medical Center (BMC) are beginning to investigate “post-acute sequelae of SARS-CoV-2 (PASC),” the medical term used for the array of long COVID symptoms. The newly launched project, called the RECOVER (Research COVID to Enhance Recovery) study, is part of a national effort—funded by the National Institutes of Health—that aims to better understand who is at risk, how recovery varies in different people, and what can be done to prevent the condition and treat patients.