Age more than 18 years old Severe acute respiratory injury with coronavirus infection symptoms during 10 days ago who needed for hospital admission infection with COVID-19 wich confirmed with nasal RT_PCR test or CT-scan imaging Mild to moderate acute respiratory distress syndrome No more than 24 hours have passed since their admission to the study. The patient should not be under aggressive mechanical respiration when entering the study. Consent to participate in the study.

Age more than 18 years old Severe acute respiratory injury with coronavirus infection symptoms during 10 days ago who needed for hospital admission infection with COVID-19 wich confirmed with nasal RT_PCR test or CT-scan imaging Mild to moderate acute respiratory distress syndrome No more than 24 hours have passed since their admission to the study. The patient should not be under aggressive mechanical respiration when entering the study. Consent to participate in the study.