Abstract: The inventive subject matter relates to an immunogenic composition and method of enhancing immunogenicity and protective immunity induced by any subunit or whole organism vaccine or combination of vaccines comprising administering to the subject a priming immunization preparation containing an antigen or fragment thereof, said preparation being selected from the group consisting of: a recombinant virus expression system; a recombinant protein antigen or a recombinant polypeptide; a synthetic peptide; a polynucleotide vector; a whole organism or extract and combinations thereof; and a boosting immunization of at least one alphavirus replicon containing an antigen or fragment thereof. The inventive subject matter further relates to an immunogenic composition and method of inducing an immune response that activates both cellular and humoral arms of the immune system.

Abstract: The present invention provides methods and compositions comprising a population of alphavirus replicon particles comprising alphavirus replicon RNAs, wherein a first replicon RNA comprises nucleic acid encoding cytomegalovirus pp65 and IE1 protein or immunogenic fragments thereof, and a second replicon RNA comprises nucleic acid encoding cytomegalovirus gB protein or an immunogenic fragment thereof, and wherein each of the two replicon RNAs is contained within a separate alphavirus replicon particle.

Abstract: The inventive subject matter relates to an immunogenic composition and method of immunizing a subject against malarial disease comprising administering to the subject a priming immunization preparation comprising alphavirus replicons expressing a gene encoding a malarial antigen or combination of malarial antigens and subsequently administering to the subject a boosting immunization preparation comprising the malarial antigen(s) or an expression system containing the antigen(s). The inventive composition and methods result in a robust induction of humoral and cellular immune system responses, including CD8+, CD4+ and antibody responses.