inclusion criteria: * part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization * are men or non-pregnant women who agree to contraceptive requirements * agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities * have venous access sufficient to allow intravenous infusions and blood sampling * the participant or legally authorized representative give signed informed consent * part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening * are greater than or equal to (≥) 65 years of age * have a body mass index (bmi) ≥ 35 * have chronic kidney disease * have type 1 or type 2 diabetes * have immunosuppressive disease * are currently receiving immunosuppressive treatment, or * are ≥ 55 years of age and have * cardiovascular disease, or * hypertension, or * chronic obstructive pulmonary disease or other chronic respiratory disease * positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: * part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization * are men or non-pregnant women who agree to contraceptive requirements * agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities * have venous access sufficient to allow intravenous infusions and blood sampling * the participant or legally authorized representative give signed informed consent * part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening * are greater than or equal to (≥) 65 years of age * have a body mass index (bmi) ≥ 35 * have chronic kidney disease * have type 1 or type 2 diabetes * have immunosuppressive disease * are currently receiving immunosuppressive treatment, or * are ≥ 55 years of age and have * cardiovascular disease, or * hypertension, or * chronic obstructive pulmonary disease or other chronic respiratory disease * positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: - part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent - part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening - are greater than or equal to (≥) 65 years of age - have a body mass index (bmi) ≥ 35 - have chronic kidney disease - have type 1 or type 2 diabetes - have immunosuppressive disease - are currently receiving immunosuppressive treatment, or - are ≥ 55 years of age and have - cardiovascular disease, or - hypertension, or - chronic obstructive pulmonary disease or other chronic respiratory disease - positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: - part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent - part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening - are greater than or equal to (≥) 65 years of age - have a body mass index (bmi) ≥ 35 - have chronic kidney disease - have type 1 or type 2 diabetes - have immunosuppressive disease - are currently receiving immunosuppressive treatment, or - are ≥ 55 years of age and have - cardiovascular disease, or - hypertension, or - chronic obstructive pulmonary disease or other chronic respiratory disease - positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: - for part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent - part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening - are greater than or equal to (≥) 65 years of age - have a body mass index (bmi) ≥ 35 - have chronic kidney disease - have type 1 or type 2 diabetes - have immunosuppressive disease - are currently receiving immunosuppressive treatment, or - are ≥ 55 years of age and have - cardiovascular disease, or - hypertension, or - chronic obstructive pulmonary disease or other chronic respiratory disease - positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: - for part 1 and part 2: resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent - part 3 only: resident or staff in a skilled nursing or assisted living facility who satisfy at least one of the following at the time of screening - are greater than or equal to (≥) 65 years of age - have a body mass index (bmi) ≥ 35 - have chronic kidney disease - have type 1 or type 2 diabetes - have immunosuppressive disease - are currently receiving immunosuppressive treatment, or - are ≥ 55 years of age and have - cardiovascular disease, or - hypertension, or - chronic obstructive pulmonary disease or other chronic respiratory disease - positive sars-cov-2 test and infusion within 10 days of symptom onset, or positive sars-cov-2 test and infusion within 10 days of testing if asymptomatic

inclusion criteria: - resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of direct sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent

inclusion criteria: - resident or facility staff in a skilled nursing or assisted living facility with at least one confirmed case of direct sars-cov-2 detection less than or equal to (≤)7 days prior to randomization - are men or non-pregnant women who agree to contraceptive requirements - agree to the collection of nasal, mid-turbinate, oropharyngeal, and nasopharyngeal swabs, and venous blood as specified in the schedule of activities - have venous access sufficient to allow intravenous infusions and blood sampling - the participant or legally authorized representative give signed informed consent