Poor Respiratory Health Following Relapsing SARS-CoV-2 Infection in Children with Cystic Fibrosis

Children with cystic fibrosis (CF) constitute a high-risk group for COVID-19 with underlying chronic lung disease. COVID-19 severity varying from mild infection to need of intensive care has been described in children with CF. Two children with significant underlying pulmonary morbidity are described here, who developed severe disease following SARS-CoV-2 infection. Case 1 (a 9-y-old boy) had pneumonia with respiratory failure requiring noninvasive ventilation support. He had delayed clearance of SARS-CoV-2, with recurrence of symptomatic disease with short asymptomatic period in between. He was also diagnosed with CF-related diabetes and allergic bronchopulmonary aspergillosis during the second episode. Case 2 (an 18-mo-old boy) had two episodes of SARS-CoV-2–related severe lower respiratory infection within a period of 2 mo, requiring high-flow nasal oxygen support. Both children had 3^rd pulmonary exacerbation but SARS-CoV-2 was not detected in respiratory secretions. To conclude, children with CF with underlying pulmonary morbidity, can develop severe COVID-19 and prolonged SARS-CoV-2 shedding.