inclusion criteria: * male or female, age ≥ 18 years * patient with oxygen dependence criterion: need to maintain an oxygen flow rate less than or equal to 6 liters / min to obtain: saturation by pulse oximetry (spo2) greater than or equal to 92% or arterial gas with value pao2 greater than 60mmhg. * diagnostic confirmation of sars-cov-2 pneumonia

inclusion criteria: * male or female, age ≥ 18 years * patient with oxygen dependence criterion: need to maintain an oxygen flow rate less than or equal to 6 liters / min to obtain: saturation by pulse oximetry (spo2) greater than or equal to 92% or arterial gas with value pao2 greater than 60mmhg. * diagnostic confirmation of sars-cov-2 pneumonia

inclusion criteria: - male or female, age ≥ 18 years - patient with oxygen dependence criterion: need to maintain an oxygen flow rate less than or equal to 6 liters / min to obtain: saturation by pulse oximetry (spo2) greater than or equal to 92% or arterial gas with value pao2 greater than 60mmhg. - diagnostic confirmation of sars-cov-2 pneumonia

inclusion criteria: - male or female, age ≥ 18 years - patient with oxygen dependence criterion: need to maintain an oxygen flow rate less than or equal to 6 liters / min to obtain: saturation by pulse oximetry (spo2) greater than or equal to 92% or arterial gas with value pao2 greater than 60mmhg. - diagnostic confirmation of sars-cov-2 pneumonia