Patients who need hospitalization according to the guidelines of "National guidelines for the diagnosis and treatment of COVID-19" and for whom medical treatment has been initiated. And o2 saturation<93%. Or Chest CT-scan with COVID-19 pattern. Volunteer to join the trial and sign the informed consent form.

Patients who need hospitalization according to the guidelines of "National guidelines for the diagnosis and treatment of COVID-19" and for whom medical treatment has been initiated. And o2 saturation<93%. Or Chest CT-scan with COVID-19 pattern. Volunteer to join the trial and sign the informed consent form.