Patients in acute phase with Laboratory confirmation of SARS-COV-2 infection, Pneumonia confirmed by chest x-ray or Computed tomography Scan, Respiratory rate> 30 times / minute, Oxygen Saturation less than 93% , Arterial oxygen partial pressure (Pao2) /oxygen inhalation(Fio2) less than 300 mmHg No history of tumor or malignant disease

Patients in acute phase with Laboratory confirmation of SARS-COV-2 infection, Pneumonia confirmed by chest x-ray or Computed tomography Scan, Respiratory rate> 30 times / minute, Oxygen Saturation less than 93% , Arterial oxygen partial pressure (Pao2) /oxygen inhalation(Fio2) less than 300 mmHg No history of tumor or malignant disease