inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: men or post-menopausal women age ≥65 years. current nursing home resident. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: men or post-menopausal women age ≥65 years. current nursing home resident. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. cov severity of moderate or less or spo2 ≥ 85% (on room air or ≤ 2 l of supplemental oxygen at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic or other clia certified laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. covid-19 severity of moderate or less (according to world health organization (who)/national institutes of health (nih) severity categorization or spo2 ≥ 85% on room air within previous 72 hours and ≤ 2 l of oxygen by nasal cannula (or on room air) at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic's central laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.

inclusion criteria: 1. men or post-menopausal women age ≥65 years. 2. current nursing home resident. 3. covid-19 severity of moderate or less (according to world health organization (who)/national institutes of health (nih) severity categorization or spo2 ≥ 85% on room air within previous 72 hours and ≤ 2 l of oxygen by nasal cannula (or on room air) at time of enrollment. 4. sars-cov-2 infection confirmed by pcr test at mayo clinic's central laboratory within 10 days before randomization. 5. willing and able to provide written informed consent or have a legally authorized representative (lar) who will provide informed consent.