The purpose of this study is to see if Remdesivir (RDV) in the presence of severely reduced kidney function, can improve the health of adults and children following hospitalization for COVID 19. The study is using Remdesivir compared to placebo infusions to determine the safety and efficacy of Remdesivir in severely reduced kidney function in COVID 19 subjects. The study is sponsored by Gilead Sciences. Patients will be randomized 2:1 to the Remdesivir or placebo. The duration of the study is 60 days.

To assess the safety, tolerability and effects of SBI-101 therapy in COVID-19 subjects with acute kidney injury (AKI) receiving renal replacement therapy. The study product is a device that is added to the dialysis machine and is being developed by Sentien Biotechnologies. Not everyone will receive the study product. A total of 8 subjects will receive the study product and 4 subjects will receive their standard of care treatment. The study product, called SBI-101, is a device that is added to the dialysis machine. Inside the device are human mesenchymal stromal cells (MSC). These cells do not enter your blood. The study duration is approximately 6 months.