inclusion criteria: 1. adults aged at least 19 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) * patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 \<300 (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 19 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) * patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 \<300 (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 19 years at screening those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 <300 (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 19 years at screening those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 <300 (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 19 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) - patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 <300 (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 19 years at screening 2. those who have been admitted or scheduled to be admitted due to a diagnosis with 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% (to be confirmed with respiratory rate ≥20/min or pulse rate ≥90 beats/min secondarily) - patients identified as severe: oxygen saturation in the atmosphere (spo2) ≤93% or pao2/fio2 <300 (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