* simultaneous participation in any other clinical study incompatible with this one * treatment with an antibody immunotherapy that is not standard of care for covid-19 within 4 weeks of screening * requirement for mechanical ventilation or ecmo at screening * hypotension at screening, defined as supine bp \<95 mm hg systolic or \<55 mm hg diastolic * severe liver injury defined as ast or alt ≥5x the upper limit of normal * severe kidney failure defined as an estimated glomerular filtration rate (egfr) \<30 ml/min * any known immune deficiency * pregnancy or breastfeeding

* simultaneous participation in any other clinical study incompatible with this one * treatment with an antibody immunotherapy that is not standard of care for covid-19 within 4 weeks of screening * requirement for mechanical ventilation or ecmo at screening * hypotension at screening, defined as supine bp \<95 mm hg systolic or \<55 mm hg diastolic * severe liver injury defined as ast or alt ≥5x the upper limit of normal * severe kidney failure defined as an estimated glomerular filtration rate (egfr) \<30 ml/min * any known immune deficiency * pregnancy or breastfeeding

- simultaneous participation in any other clinical study incompatible with this one - treatment with an antibody immunotherapy that is not standard of care for covid-19 within 4 weeks of screening - requirement for mechanical ventilation or ecmo at screening - hypotension at screening, defined as supine bp <95 mm hg systolic or <55 mm hg diastolic - severe liver injury defined as ast or alt ≥5x the upper limit of normal - severe kidney failure defined as an estimated glomerular filtration rate (egfr) <30 ml/min - any known immune deficiency - pregnancy or breastfeeding

- simultaneous participation in any other clinical study incompatible with this one - treatment with an antibody immunotherapy that is not standard of care for covid-19 within 4 weeks of screening - requirement for mechanical ventilation or ecmo at screening - hypotension at screening, defined as supine bp <95 mm hg systolic or <55 mm hg diastolic - severe liver injury defined as ast or alt ≥5x the upper limit of normal - severe kidney failure defined as an estimated glomerular filtration rate (egfr) <30 ml/min - any known immune deficiency - pregnancy or breastfeeding