inclusion criteria: * patients requiring supplemental oxygen \[peripheral oxygen saturation (spo2) \< 93%\], admitted to hospital with covid-19 symptoms associated with chest computed tomography (ct) scan suggestive of viral pneumonia or positive nasopharyngeal swab test for sars-cov2 (rt-pcr) * age equal or superior to 18 years * non-pregnant women * willingness to receive study treatment * providing written and informed consent or the same consent signed by a family member

inclusion criteria: * patients requiring supplemental oxygen \[peripheral oxygen saturation (spo2) \< 93%\], admitted to hospital with covid-19 symptoms associated with chest computed tomography (ct) scan suggestive of viral pneumonia or positive nasopharyngeal swab test for sars-cov2 (rt-pcr) * age equal or superior to 18 years * non-pregnant women * willingness to receive study treatment * providing written and informed consent or the same consent signed by a family member

inclusion criteria: - patients requiring supplemental oxygen [peripheral oxygen saturation (spo2) < 93%], admitted to hospital with covid-19 symptoms associated with chest computed tomography (ct) scan suggestive of viral pneumonia or positive nasopharyngeal swab test for sars-cov2 (rt-pcr) - age equal or superior to 18 years - non-pregnant women - willingness to receive study treatment - providing written and informed consent or the same consent signed by a family member

inclusion criteria: - patients requiring supplemental oxygen [peripheral oxygen saturation (spo2) < 93%], admitted to hospital with covid-19 symptoms associated with chest computed tomography (ct) scan suggestive of viral pneumonia or positive nasopharyngeal swab test for sars-cov2 (rt-pcr) - age equal or superior to 18 years - non-pregnant women - willingness to receive study treatment - providing written and informed consent or the same consent signed by a family member

inclusion criteria: - clinical scenario compatible with infection by the sars-cov-2 [characteristic symptoms of covid-19 (fever and / or cough) without respiratory failure (saturation < 93% with nasal catheter of oxygen 5liters/minute) associated with chest tomographic images compatible with covid-19. - clinical scenario compatible with infection by the sars-cov-2 [characteristic symptoms of covid-19 (fever and / or cough) without respiratory failure (saturation < 93% with nasal catheter of oxygen 5liters/minute) associated with positive molecular test for covid-19. - age equal or superior to 18 years - non-pregnant women - willingness to receive study treatment - providing written and informed consent or the same consent signed by a family member

inclusion criteria: - clinical scenario compatible with infection by the sars-cov-2 [characteristic symptoms of covid-19 (fever and / or cough) without respiratory failure (saturation < 93% with nasal catheter of oxygen 5liters/minute) associated with chest tomographic images compatible with covid-19. - clinical scenario compatible with infection by the sars-cov-2 [characteristic symptoms of covid-19 (fever and / or cough) without respiratory failure (saturation < 93% with nasal catheter of oxygen 5liters/minute) associated with positive molecular test for covid-19. - age equal or superior to 18 years - non-pregnant women - willingness to receive study treatment - providing written and informed consent or the same consent signed by a family member