Inclusion Criteria:  Person and / or trustworthy person who has received complete information on the organization of the research and who has not opposed their participation and the use of their data Hospitalized for ≥ 48 hours and ≤ 10 days SARS-CoV-2 positive nasopharyngeal sample Severity criteria: Lung involvement described as compatible with SARS-CoV-2 on radiography or scanner and partial pressure of oxygne (PaO2) / Fraction of inspired oxygen (FiO2) ≤ 300 mmHg and / or respiratory rate (RR) ≥ 30 / min  Exclusion Criteria:  Known chronic kidney disease, or initial Glomerular Filtration Rate (GFR) <60 ml / min / 1.73m2 or Renal Transplant Known proteinuria Known proximal tubulopathy Treatment with Forxiga