Phase II randomized non-inferiority trial comparing the humoral immunogenicity of NDV-HXP-S and BNT162b2 vaccines in Brazil
This was a multicenter, randomized, double-blind, active-controlled and non-inferiority Phase II clinical trial, to evaluate the immunogenicity and safety of a fifth-dose booster of NDV-HXP-S, an egg-derived, inactivated COVID-19 vectored-vaccine virus using the Newcastle disease virus.