inclusion criteria: - confirmation of sars-cov2 infection by pcr. - severe pneumonia related to sars-cov2 infection, defined as fever or suspected respiratory infection with radiographic abnormalities suggestive of viral pneumonia, plus at least one of the following: - respiratory rate >30 breaths/min; or - severe respiratory distress, as determined by the investigator; or; - oxygen saturation (spo2) ≤93% on room air.

inclusion criteria: - confirmation of sars-cov2 infection by pcr. - severe pneumonia related to sars-cov2 infection, defined as fever or suspected respiratory infection with radiographic abnormalities suggestive of viral pneumonia, plus at least one of the following: - respiratory rate >30 breaths/min; or - severe respiratory distress, as determined by the investigator; or; - oxygen saturation (spo2) ≤93% on room air.

inclusion criteria: - confirmation of sars-cov2 infection by pcr. - severe pneumonia related to sars-cov2 infection, defined as fever or suspected respiratory infection with radiographic abnormalities suggestive of viral pneumonia, plus at least one of the following: - respiratory rate >30 breaths/min; or - severe respiratory distress, as determined by the investigator; or; - spo2 ≤93% on room air.

inclusion criteria: - confirmation of sars-cov2 infection by pcr. - severe pneumonia related to sars-cov2 infection, defined as fever or suspected respiratory infection with radiographic abnormalities suggestive of viral pneumonia, plus at least one of the following: - respiratory rate >30 breaths/min; or - severe respiratory distress, as determined by the investigator; or; - spo2 ≤93% on room air.