Primary Outcomes
Measure: Need for mechanical ventilation
Time: From randomization to hospital discharge or ICU admission, whatever occurs first, assessed up to two months
Secondary Outcomes
Measure: Supplemental oxygen requirements
Time: From randomization to hospital discharge or ICU admission, whatever occurs first, assessed up to two months
Measure: Mortality
Time: From randomization to hospital discharge or ICU admission, whatever occurs first, assessed up to two months
Measure: Delay onset of ventilation
Time: From randomization to the day of need for mechanical ventilation or hospital discharge, whatever occurs first, assessed up to two months
Measure: Cytokine levels
Time: From randomization to hospital discharge or ICU admission, whatever occurs first, assessed up to two months