inclusion criteria: - provide written consent before being included in the essay. - positive cases of covid-19 (based on polymerase chain reaction or positive antigen test for sars-cov-2), - being diagnosed with mild to moderate sars-cov-2 disease (covid19) - symptomatic or asymptomatic patient, with good clinical appearance, sat o2 at rest > 94% with room air, and without desaturation with ambulation, and without tachypnea, - respiratory rate < 20. - suspected cases of covid-19, based on 3 criteria: - fever > 38 degrees celsius - o2 saturation ≤94 - abnormal laboratory indicators, any of them: - lymphopenia <1500 cells/m3 - c reactive protein >2 mg/l - ferritin >300g/l

inclusion criteria: - provide written consent before being included in the essay. - positive cases of covid-19 (based on polymerase chain reaction or positive antigen test for sars-cov-2), - being diagnosed with mild to moderate sars-cov-2 disease (covid19) - symptomatic or asymptomatic patient, with good clinical appearance, sat o2 at rest > 94% with room air, and without desaturation with ambulation, and without tachypnea, - respiratory rate < 20. - suspected cases of covid-19, based on 3 criteria: - fever > 38 degrees celsius - o2 saturation ≤94 - abnormal laboratory indicators, any of them: - lymphopenia <1500 cells/m3 - c reactive protein >2 mg/l - ferritin >300g/l