Persistent SARS-CoV-2 infection with repeated clinical recurrence in a patient with common variable immunodeficiency

A 22-year-old man with common variable immunodeficiency complicated by granulomatous–lymphocytic interstitial lung disease previously treated with azathioprine and a 4-weekly course of rituximab 3 years earlier who was receiving subcutaneous immunoglobulin replacement therapy was diagnosed with coronavirus disease 2019 (COVID-19) using an RT-PCR for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) of a nasopharyngeal swab specimen...