A non-naturally occurring porcine reproductive and respiratory syndrome virus (PRRSV) is provided herein, and methods of making and using the non-naturally occurring PRRSV also are provided.

Provided is a recombinant vector including a porcine Fc fragment. By fusing the porcine Fc fragment with various target proteins by using the recombinant vector of the present invention, not only target proteins may be expressed using various hosts including plants, but the productivity and stability of target proteins may also be increased.

Provided is an antigen fused with a porcine Fc fragment, a vaccine composition having a self-adjuvanting effect by binding an Fc fragment to various antigens, and a method of producing the antigen.

A non-naturally occurring porcine reproductive and respiratory syndrome virus (PRRSV) is provided herein, and methods of making and using the non-naturally occurring PRRSV also are provided.

This invention provides new compositions comprising nucleotide sequence(s) encoding alphaherpesvirus glycoprotein D protein(s) (gDP(s)) and antigen(s) that induce immune responses. Such sequences typically encode gDP:antigen fusion proteins and typically also include feature(s) that significantly enhance immune responses such as (a) sequences encoding ITIC signal transducing adaptor proteins, e.g., SLAM-associated proteins (SAPs), Ewing's sarcoma-associated transcript 2 proteins, or both, or non-gDP checkpoint inhibitor(s); (b) sequences encoding antigen-associated targeting sequences, e.g., polyubiquitin sequences; (c) deimmunized/modified antigen-encoding sequences; (d) gDP(s) with modified sequence(s); (e) expression-enhancing introns; (f) transfection-facilitating agents; or (g) combinations thereof. Methods of using such constructs to induce immune responses and other methods and compositions also are provided, including methods of using such constructs in animals not known to express Herpesvirus entry mediator (HVEM) receptors (e.g., pigs), animals not under disease agent-associated checkpoint inhibition, and other contexts.

A non-naturally occurring porcine reproductive and respiratory syndrome virus (PRRSV) is provided herein, and methods of making and using the non-naturally occurring PRRSV also are provided.

The present invention relates to an immunogen-carrier, wherein the immunogen-carrier is preferably a virus-like particle (VLP) composed of a plurality of a modified PCV2 ORF2 protein. In particular, the present invention belongs to the field of compliance markers and marker vaccines which allow for the differentiation between infected and vaccinated individuals. In particular, it relates to a compliance marker for vaccines including a subunit antigen, and a DIVA (Differentiating Infected from Vaccinated Animals) system which makes it possible to differentiate between animals infected with a pathogen and animals treated with a subunit antigen derived from said pathogen.

The invention provides isolated polynucleotide molecules that comprise a DNA sequence encoding an infectious RNA sequence encoding a genetically-modified North American PRRS virus, methods to make it and related polypeptides, polynucleotides, and various components. Vaccines comprising the genetically modified virus and polynucleotides and a diagnostic kit to distinguish between naturally infected and vaccinated animals are also provided.

Provided is an antigen fused with a porcine Fc fragment, a vaccine composition having a self-adjuvanting effect by binding an Fc fragment to various antigens, and a method of producing the antigen.

Provided is a recombinant vector including a porcine Fc fragment. By fusing the porcine Fc fragment with various target proteins by using the recombinant vector of the present invention, not only target proteins may be expressed using various hosts including plants, but the productivity and stability of target proteins may also be increased.