This is a randomized, blinded, vehicle-controlled dose-escalation study. Initial enrollment and treatment will be conducted as an inpatient study. Patients will be randomized 2:1, ORTD-1 treatment versus vehicle control. Patients will be allocated into 1 of 3 sequential escalating dose cohorts. Blinded study drug will be infused intravenously once daily for 5 consecutive days.
Evaluate the safety and effect of ORTD-1 on COVID-19 related pneumonia.