This Phase 2b study will evaluate safety, tolerability, and immunogenicity of an RSV vaccine when given together with Tdap in approximately 710 healthy nonpregnant women 18 through 49 years of age.~The participants will be equally split into 5 treatment groups: One of a possible two dose levels of RSV vaccine (the higher dose level will be formulated with an aluminum hydroxide adjuvant) with either the Tdap or Placebo, or a Tdap and placebo combination.~This study will evaluate non-inferiority of the Tdap when co-administered with RSV vaccine candidate and vice-versa by measuring participants' immune response through appropriate antibody and component levels 1 month after vaccination.
This phase 2b study will evaluate safety, tolerability, and immunogenicity of an RSV vaccine when given together with Tdap in approximately 710 healthy nonpregnant women 18 through 49 years of age. This study will evaluate non-inferiority of RSV vaccine when given with Tdap and vice-versa.