Sign and agree to the Informed Consent Form, Both sexes, of any ethnic origin, aged between 18 and 90 years, COVID-19 patients diagnosed by RT-PCR (reverse-transcriptase polymerase chain reaction) or with a strong suspicion of COVID-19 by clinical evaluation through compatible clinical and radiological findings, 4. Time of disease evolution less than 10 days, 5. Radiological diagnosis of pneumonia grade 2 A, with gas exchange ratio> 200 on blood gas analysis (paO2 / pFiO2), characterizing mild hypoxemia, 6. Indication of hospital treatment regime, provided that the period of hospitalization before inclusion is not more than 24 hours, 7. Need for supplemental oxygen therapy (O2) less than 5L / min.

Sign and agree to the Informed Consent Form, Both sexes, of any ethnic origin, aged between 18 and 90 years, COVID-19 patients diagnosed by RT-PCR (reverse-transcriptase polymerase chain reaction) or with a strong suspicion of COVID-19 by clinical evaluation through compatible clinical and radiological findings, 4. Time of disease evolution less than 10 days, 5. Radiological diagnosis of pneumonia grade 2 A, with gas exchange ratio> 200 on blood gas analysis (paO2 / pFiO2), characterizing mild hypoxemia, 6. Indication of hospital treatment regime, provided that the period of hospitalization before inclusion is not more than 24 hours, 7. Need for supplemental oxygen therapy (O2) less than 5L / min.