inclusion criteria: an individual who or whose legally authorized representative has fully informed of all pertinent aspect of the trial and imp, voluntarily decided to participate in the trial and adherence to the trial-related requirements, and provided a written informed consent an adult man or woman aged between 19 years (or age of majority in his/her country) and 80 years. a hospitalized patient with laboratory-confirmed sars-cov-2 infection by pcr test within 10 days (240 hours) prior to randomization. an individual with an oxygen saturation of 94% or less in room air condition at the time of randomization; and whose clinical status is stage 4 (oxygenation by facial mask or nasal cannula) or 5 (non-invasive ventilation or high flow oxygen) on who 8-point ordinal scale pneumonia that satisfies all the following criteria at the time of randomization planned first dosing of the imp not later than 2 days after the initiation of standard of care (soc), when given in combination with soc for severe illness (according to nih clinical spectrum of sars-cov-2 infection) a score of 5 points or more ("think sepsis") on the news 2 scale at the time of randomization

inclusion criteria: an individual who or whose legally authorized representative has fully informed of all pertinent aspect of the trial and imp, voluntarily decided to participate in the trial and adherence to the trial-related requirements, and provided a written informed consent an adult man or woman aged between 19 years (or age of majority in his/her country) and 80 years. a hospitalized patient with laboratory-confirmed sars-cov-2 infection by pcr test within 10 days (240 hours) prior to randomization. an individual with an oxygen saturation of 94% or less in room air condition at the time of randomization; and whose clinical status is stage 4 (oxygenation by facial mask or nasal cannula) or 5 (non-invasive ventilation or high flow oxygen) on who 8-point ordinal scale pneumonia that satisfies all the following criteria at the time of randomization planned first dosing of the imp not later than 2 days after the initiation of standard of care (soc), when given in combination with soc for severe illness (according to nih clinical spectrum of sars-cov-2 infection) a score of 5 points or more ("think sepsis") on the news 2 scale at the time of randomization