A Randomized, Open-label, Dose-ranging Study in Adults and Pediatric Individuals ≥ 12 Years of Age to Assess the Safety, Immunogenicity, Pharmacokinetics, and Pharmacodynamics of AZD7442, for Pre-exposure Prophylaxis of COVID-19

"Arm A - Day 1:~600 mg AZD7442 administered sequentially as a 3 mL IM injection containing 300 mg tixagevimab (AZD8895) and a 3 mL IM injection containing 300 mg cilgavimab (AZD1061), one injection in each gluteal region.~Arm A - Days 92, 183, 274, 365:~300 mg AZD7442 administered sequentially as a 1.5 mL IM injection containing 150 mg tixagevimab (AZD8895) and a 1.5 mL IM injection containing 150 mg cilgavimab (AZD1061), one injection in each gluteal region."

"Arm B - Day 1:~1200 mg AZD7442 (600 mg tixagevimab \[AZD8895\] and 600 mg cilgavimab \[AZD1061\]) administered by IV infusion.~Arm B - Days 183, 365:~600 mg AZD7442 administered sequentially as a 3 mL IM injection containing 300 mg tixagevimab (AZD8895) and a 3 mL IM injection containing 300 mg cilgavimab (AZD1061), one injection in each gluteal region."