Disclosed herein are methods of forming compounds and exemplary compounds in the nature of a conjugated compound, which in some embodiments comprises an antigen and virus particle mixed in a conjugation reaction to form a conjugate mixture, such that the conditions and steps of forming these products allow for use of the conjugate mixture as a vaccine, including but not limited to use as a vaccine against various pathogens including for treatment of diseases caused by novel coronaviruses (including SARS-COV 2).

The present invention is intended to provide an adjuvant having high safety to living bodies and an action to sufficiently reinforce immune function, and a vaccine comprising the adjuvant. Specifically, the present invention relates to 34 novel adjuvant candidate compounds, which have been identified by screening 145 food additives and 51 injection additives, using, as indicators, an increase in the antibody titer against influenza virus and a protective effect against infection with influenza virus, and then selecting those having the function of increasing the antiviral antibody titer in blood and the protective effect against viral infection. In addition, the present invention also relates to a vaccine comprising these adjuvant candidate compounds.

Provided are an H5 avian influenza vaccine strain which differentiates infected from vaccinated animals, a preparation method therefor, and an application. The vaccine strain uses an NA protein of influenza B as a label, and has application value and public health significance for the prevention, control and decontamination of H5 avian influenza.

Disclosed herein are methods of forming compounds and exemplary stable compounds in the nature of a conjugated compound at refrigerated or room temperature, which in some embodiments comprises an antigen and virus particle mixed in a conjugation reaction to form a conjugate mixture, such that the conditions and steps of forming these products allow for use of the conjugate mixture as a vaccine, including but not limited to use as a vaccine against various pathogens including for treatment of diseases caused by novel coronaviruses (including SARS-COV 2).

To develop a universal and long-lasting influenza or other pathogens vaccine has been a mission impossible goal in the life science and health field. Applicants disclose, herein, vaccines prepared against SARS-COV-2, an influenza A strain vaccine prepared from a 1934 influenza virus (A/PR/8/34 H1N1, Puerto Roca, 1934), and an influenza B strain vaccine prepared from a 1940 influenza virus. The disclosed vaccine induces production of broadly neutralizing antibodies in mice. The presently disclosed vaccine is able to inhibit two other influenza A strains: a 2009 influenza H1N1 virus collected from Los Angeles (A/California/07/2009) and a 2014 influenza H3N2 virus collected from Hong Kong (A/Hongkong/4801/2014). Applicants also describe an influenza B strain vaccine prepared from a B strain virus from a 1940 patient in USA (B/L11/40). The B strain vaccine also produced broadly neutralizing antibodies, in this case against a B strain from Colorado 2017 (B/Colorado/2017). Applicant's methods and compositions are not only useful in creating influenza vaccines with broad activity against other influenza subtypes but also be efficient to generate long-lasting SARS-CoV-2 vaccines against emerging new variants either through recombined protein antigens from SARS-CoV-2 or inactivated SARS-CoV-2 virus.

Disclosed herein are compositions and methods related to mutant viruses, and in particular, mutant influenza viruses. The mutant viruses disclosed herein include a mutant M2 sequence, and are useful in immunogenic compositions, e.g., as vaccines. Also disclosed herein are methods, compositions and cells for propagating the viral mutants, and methods, devices and compositions related to vaccination.

AAV vectors expressing anti-influenza antibodies are provided. Also described are pharmaceutical compositions useful in delivery same for prophylactic or anti-viral purposes. Methods of delivering such vectors are provided.

Fusion proteins comprising one or more portions of hepatitis virus core antigen (HBcAg) fused to immunogenic portions of influenza virus hemagglutinin (HA) protein, and nanoparticles (virus-like particles) formed from such proteins, nucleic acid molecules encoding such proteins, methods of making such nanoparticles, methods of using the disclosed nanoparticles to vaccinate an individual against influenza virus, and antibodies elicited by vaccination of a mammal with the disclosed nanoparticles.

The invention relates generally to the field of influenza vaccination, specifically to a two-component vaccine comprising influenza virus strains with native hemagglutinin (HA) and lacking the functional NS gene (delNSI influenza), for use in the vaccination of a subject, wherein a priming composition, comprising one, two or three delNSI influenza virus strains selected from group 1 influenza A virus, group 2 influenza A virus, or group 3, consisting of influenza B virus, is formulated for prime-administration prior to a boosting composition, comprising one, two or three delNSI influenza virus strains of the same group as in the priming composition but differing antigenically in the HA head, formulated for boost-administration. Further, a kit comprising said two-components and its use for preventing influenza virus infection is provided.

Disclosed herein are compositions and methods related to mutant viruses, and in particular, mutant influenza viruses. The mutant viruses disclosed herein include a mutant BM2 sequence, and are useful in immunogenic compositions, e.g., as vaccines. Also disclosed herein are methods, compositions and cells for propagating the viral mutants, and methods, devices and compositions related to vaccination.