COVID-19 in Immunosuppressed Children

Variables to be measured * Demographic data (initials, record, age, sex, race / ethnicity, weight, height, BMI). * Epidemiological data: * For kidney transplant patients: time of transplant, in years and complete months; primary kidney disease; presence and time of onset of respiratory symptoms, in days; presence of risk factors or comorbidities; current immunosuppression (drugs and doses); serum level of calcineurin inhibitor on the day of collection; previous vaccination for Influenza; previous viral infections; date of the last episode of rejection treated. * For liver transplant patients: time of transplant, in years and complete months; primary liver disease; presence and time of onset of respiratory symptoms, in days; presence of risk factors or comorbidities; current immunosuppression (drugs and doses); serum level of calcineurin inhibitor on the day of collection; previous vaccination for Influenza; previous viral infections; date of the last episode of rejection treated. * For oncohematological patients: time of diagnosis, in years and complete months; primary oncohematological disease; treatment received for the oncohematological disease; presence and time of onset of respiratory symptoms, in days; presence of risk factors or comorbidities; current cancer treatment; previous vaccination for Influenza; previous viral infections. * Clinics visit / hospitalization data: clinical picture: syndromic diagnosis / signs and symptoms; initial image exam: chest X-ray and / or chest CT; Treatment performed: antiviral, antibiotic, corticoid (reason / dose / time); respiratory support (oxygen therapy only / Non-Invasive Ventilation / High Flow Nasal Cannula / invasive mechanical pulmonary ventilation / ECMO - time of use (days); days free of oxygen therapy, Non-Invasive Ventilation and invasive mechanical pulmonary ventilation. * Diagnosis of SARS-CoV-2 infection: rapid test for Covid-19 in the blood: IgM / IgG; rapid test for COVID-19 in nasopharyngeal or tracheal secretion. * Outcomes: Serology for COVID-19 result; PCR for COVID-19 result; presence of symptoms of COVID-19; proportion of patients with viral shedding on days 3,7,14,21 and 30 after diagnosis; need for hospital admission; need for Intensive care admission; death.