Data collection
Data was systematically reviewed by patient’s records: (a) demographics:
age, sex, duration of signs/symptoms before diagnosis; (b) chronic
conditions: pulmonary, neuropathies, cardiopathies, diabetes mellitus,
systemic arterial hypertension, immunocompromising diseases [primary
immunodeficiency, solid organ transplantation, hematopoietic stem cell
transplant (HSCT), malignancies, chronic kidney disease, autoimmune
diseases], and the use of immunosuppressive agent; (c) clinical
features: fever, duration of fever, nasal discharge, sneezing, coughing,
dyspnea, anosmia, pneumonia, myalgia, headache, conjunctivitis, rash,
diarrhea, vomiting, abdominal, pain, neurological symptoms, seizure,
SARS, hypoxemia and arterial hypotension; (d) laboratory parameters:
hemoglobin concentration, leucocyte, lymphocyte and thrombocyte counts,
C-reactive protein, fibrinogen, D-dimer, ferritin, lactate
dehydrogenase; (e) radiological exams: thoracic radiography and computer
tomography; (f) treatments: supplementary oxygen, antibiotics,
oseltamivir, intravenous immunoglobulin, enoxaparin, aspirin, systemic
glucocorticoids and dialysis; (g) and outcomes: hospitalization,
admission in pediatric intensive care unit (PICU), duration of
hospitalization, mechanical ventilation, vasoactive agents, shock,
cardiac abnormalities, and death.