A Study of LY3819253 (LY-CoV555) and LY3832479 (LY-CoV016) in Preventing SARS-CoV-2 Infection and COVID-19 in Nursing Home Residents and Staff

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 Exclusion Criteria: * Parts 1 and 2: * Recovered from confirmed COVID-19 disease or asymptomatic infection * Prior history of a positive SARS-CoV-2 serology test * History of convalescent COVID-19 plasma treatment * Participation in a previous SARS-CoV-2 vaccine trial or received an approved SARS-CoV-2 vaccine * Previous receipt of SAR-CoV-2-specific monoclonal antibodies * Have any serious concomitant systemic disease, condition or disorder that, in the opinion of the investigator, should preclude participation in this study