RT Journal Article SR Electronic T1 Persistent COVID-19 lung infection in a child with a primary immunodeficiency JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e244768 DO 10.1136/bcr-2021-244768 VO 14 IS 9 A1 Sarah Fernández-Suárez A1 Giuliana Reyes-Florian A1 Pablo Vásquez-Hoyos A1 Jesús Angel Domínguez-Rojas YR 2021 UL http://casereports.bmj.com/content/14/9/e244768.abstract AB SARS-CoV-2 infection in children with primary immunodeficiency disease (PID) and its complications have not yet been well described, the course of COVID-19 can range from mild illness to death. We aim to report the case of a child with a PID who develop a severe and persistent pulmonary COVID-19 infection. We present chronologically his clinical course, tests, interventions and radiological findings showing his irregular evolution and poor response to infection. This case highlights the need to accurately monitor the immune response in these cases to try to stop the progression of the damage.