The present invention relates to a recombinant poxvirus comprising tetanus toxin fragment C for improved immunogenicity of an antigen and related methods and uses. Specifically, the present invention generally relates to genetically engineered (recombinant) poxvirus vectors comprising a tetanus toxin fragment C (TTC) coding sequence operably linked to a bacterial antigenic determinant as well as to uses thereof, e.g., to affect an immune response in a subject.