Patients and methods
A retrospective study (1st to 31st of March, 2020) of children less than 15 years old with primary or secondary immunosuppression infected with SARS-CoV-2 and treated at the University Hospital La Paz, Madrid, Spain, was performed. For inclusion in the study, the SARS-CoV-2 polymerase chain reaction (PCR) had to be positive. PCR was performed via nasal swabs, and if the test was initially negative but clinical suspicion was high, it was repeated in the next 24 h. Inpatients and outpatients were included.
Symptoms, blood analysis results and radiological data, previous underlying disease, immunosuppressive treatment, treatment received for COVID-19 disease, and evolution were collected.