TRIAL DESIGN The primary endpoint is to determine if FSD-201 plus SOC provides a significant improvement in clinical status (i.e., shorter time to symptom relief). Key secondary objectives include determining if FSD-201 plus SOC demonstrates additional benefit in terms of safety, objective assessments such as length of time to normalization of fever, length of time to improvement of oxygen saturation and length of time to clinical progression including time to mechanical ventilation or hospitalization, and length of hospital stay. The exploratory endpoint is cytokine clearance as measured by Enzyme Linked Immunosorbent Assay (ELISA).