This application pertains to methods of isolating virus particles and producing virus vaccine composition comprising subject a biological sample to an anion exchange chromatography and a hydroxyapatite chromatography. The application also pertains to rabies virus vaccine compositions and methods of assessing suitability of a virus vaccine composition or releasing a commercial batch of virus vaccine composition for clinical use.

This application relates to the field of prevention of pneumonia by administration of a high-dose influenza vaccine.

The present disclosure provides vaccine compositions comprising at least one adjuvant and at least one antigen, wherein the adjuvant is a cationic lipid. The disclosure also provides methods of treating a disease in a mammal, methods of preventing a disease in a mammal, and methods of effecting antigen cross presentation to induce a humoral immune response and a cellular immune response in a mammal utilizing the vaccine compositions. Cross presentation of various antigens can be achieved by formulating the specific antigens with cationic lipids possessing adjuvant properties.

Novel nanoparticle fusion proteins comprising proteins or peptides fused to Dps (DNA binding protein from starved cells) proteins are provided which bring forth distinct advantages for development of new and improved vaccines, diagnostic tests, and other biomedical products.

The present invention relates to a method of detecting the presence of an antibody to an avian influenza hemagglutinin antigen in a sample from a subject, wherein the antibody binds to an epitope of an avian influenza hemagglutinin antigen, comprising the steps of cloning a nucleic acid encoding an avian influenza antigen into a vector, infiltrating a plant cell with the vector, recovering the antigen from the plant, contacting the sample with the antigen, and detecting the formation of an antibody-antigen complex, wherein the antibody-antigen complex comprises antibodies in the sample bound to the antigen and wherein the formation of an antibody-antigen complex confirms that the subject has been exposed to an avian influenza hemagglutinin antigen. The present invention also relates to a device for assaying the presence of an antibody to avian influenza hemagglutinin antigen in a sample from a subject.

The present invention provides a recombinant viral vector, an immunogenic composition containing the same, and the use thereof. The recombinant viral vector comprises a polynucleotide encoding a fusion peptide of CD4 helper T cell epitopes, the epitope fusion peptide comprising a cytomegalovirus epitope and/or an influenza virus epitope. The epitope fusion peptide and the recombinant viral vector provided by the present invention can improve the level of cellular immune response to a target immunogen, particularly to a weak immunogen, and overcome the immune tolerance of immune system to an antigen, particularly to a tumor antigen or an infection-related antigen. The products of the present invention are suitable for enhancing the efficacy of vaccines.

Compositions and methods for modified dendrimer nanoparticle (“MDNP”) delivery of therapeutic, prophylactic and/or diagnostic agent such as large repRNA molecules to the cells of a subject have been developed. MDNPs efficiently drive proliferation of antigen-specific T cells against intracellular antigen, and potentiate antigen-specific antibody responses. MDNPs can be multiplexed to deliver two or more different repRNAs to modify expression kinetics of encoded antigens and to simultaneous deliver repRNAs and mRNAs including the same UTR elements that promote expression of encoded antigens.

The disclosure relates to mutant recombinant influenza virus gene segment 7 with at least one mutation that modulates expression of M2 and M42 polypeptide. Also disclosed are recombinant influenza viruses comprising the mutant influenza virus gene segment 7, compositions comprising the mutant recombinant influenza virus gene segment 7, use of such mutant recombinant influenza virus gene segment 7 and mutant recombinant Influenza viruses.

The present invention relates to vaccines for treating bovine respiratory disease. Such vaccines contain a combination of bovine influenza D virus and Mannheimia haemolytica antigens. An upper respiratory infection with an IDV leads to an increased potential for M. haemolytica pathology in the lungs. The vaccines may contain further antigens from other bovine respiratory pathogens.

A nucleic acid molecule including at least one expression control sequence having an Internal Ribosomal Entry Site (IRES) sequence, at least one coding region, and optionally multiple adenosines or thymidines upstream of the at least one expression control sequence is disclosed as an expression system. Besides, a recombinant expression vector including the nucleic acid molecule and pharmaceutical or medicinal use of the nucleic acid molecule are disclosed.