This study is testing two experimental COVID-19 booster vaccines in 80 healthy volunteers aged 40-64. One vaccine includes an extra component called 's3' designed to improve the body's immune response. Participants will receive a single dose of either vaccine or a placebo and be …
Phase 1/2 • Sponsor: Kara Chew • Aim: Vaccine
Last updated Aug 20, 2026 00:00 UTC