This is a global phase III clinical trial to evaluate efficacy,safety, immuogenicity of Ad5-nCoV manufactured by Cansino and Beijing Institute of Biotechnology in health adults aged 18 years old and above.~The study will be double-blind, placebo-controlled trial with participants randomly allocated 1:1 to placebo and experimental vaccine cohorts.~The immunization schedule is one doses intramuscular injections (deltoid).
This study is a global multicenter, randomized, double-blind, placebo -controlled, adaptive designed phase Ⅲ clinical trial, in order to evaluate the efficacy, safety and immunogenicity of Recombinant Novel Coronavirus Vaccine (Adenovirus Type 5 Vector) in adults 18 years old and above.