Immune function declines with aging, leaving older adults susceptible to infection, cancer and other diseases. This study is designed to test the ability of a new immune modulator, QBKPN, to boost natural immunity to improve health, including reducing respiratory infections (COVID-19, flu, etc.). We will also measure the effect of QBKPN on non-respiratory infections, quality of life and overall survival.

Study nurses from Qu Biologics will visit the participant at their homes to administer (via sub-cutaneous injection) study treatment 3 times a week for 28 days, followed by a 22 week post-treatment monitoring period (total study duration 26 weeks). Immune function will be monitored over this 26 week period with periodic blood tests. Study nurses will also administer a quality of life questionnaire periodically during study visits.