inclusion criteria: 1. adults aged at least 18 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening 3. patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) 4. those who fall under the following at screening: * patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) * patients identified as severe oxygen saturation in the atmosphere (spo2) \< 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) 5. those who have voluntarily provided a written consent to participate in this clinical study

inclusion criteria: 1. adults aged at least 18 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening 3. patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) 4. those who fall under the following at screening: * patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) * patients identified as severe oxygen saturation in the atmosphere (spo2) \< 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) 5. those who have voluntarily provided a written consent to participate in this clinical study

inclusion criteria: adults aged at least 18 years at screening those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) those who fall under the following at screening: patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) patients identified as severe oxygen saturation in the atmosphere (spo2) < 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) those who have voluntarily provided a written consent to participate in this clinical study

inclusion criteria: adults aged at least 18 years at screening those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) those who fall under the following at screening: patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) patients identified as severe oxygen saturation in the atmosphere (spo2) < 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) those who have voluntarily provided a written consent to participate in this clinical study

inclusion criteria: 1. adults aged at least 18 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening 3. patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) 4. those who fall under the following at screening: - patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) - patients identified as severe oxygen saturation in the atmosphere (spo2) < 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) 5. those who have voluntarily provided a written consent to participate in this clinical study

inclusion criteria: 1. adults aged at least 18 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with moderate to severe covid-19 by rt-pcr test within 4 days prior to screening 3. patients whose findings of covid-19 pneumonia have been confirmed by radiographic tests (ct and x-ray) at screening (e.g., ground glass opacity (ggo), crazy-paving pattern, or consolidation) 4. those who fall under the following at screening: - patients identified as moderate oxygen saturation in the atmosphere (spo2) ≥ 93% (respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) - patients identified as severe oxygen saturation in the atmosphere (spo2) < 93% with (respiratory rate ≥30/min or pulse rate ≥125 beats/min secondarily) 5. those who have voluntarily provided a written consent to participate in this clinical study