The present invention relates to a method for preparing a vaccine antigen, which includes a step of fragmenting a biological membrane associated with said vaccine antigen by treating said biological membrane with at least one calixarene of formula (II): wherein: X is a —(CH2)-CO2Y group and Y is an alkaline metal or one of the pharmaceutically acceptable salts thereof, wherein said resulting vaccine antigen also includes a fragment of the biological membrane associated with said antigen. The present invention also relates to a vaccine that can be produced by implementing the method, including a calixarene of formula (II) in carrier format, with a quantity of 0.1 to 1,000 μg in the total weight of the vaccine. The present invention further relates to the use of a calixarene as defined above for the preparation of a vaccine or a vaccine antigen, and to the vaccine for use as a drug in the treatment or prevention of an infectious disease.

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Embodiments of the present invention relate to an infectious bronchitis virus (IBV) and an immunogenic composition comprising an IBV, respectively, wherein the ORF 3a and/or the ORF 3b and/or the ORF 5a and/or the ORF 5b is inactivated. Furthermore, aspects of the present invention relate to methods for immunizing a subject comprising administering to such subject the immunogenic composition of the present invention. Moreover, embodiments of the present invention relate to methods of treating or preventing clinical signs caused by IBV in a subject of need, the method comprising administering to the subject a therapeutically effective amount of an immunogenic composition according to the embodiments of the present invention.

The present invention relates to dengue virus vaccine compositions comprising a first and a second dengue vaccine, wherein the first dengue vaccine comprises at least one live, 5 attenuated dengue virus or live, attenuated chimeric dengue virus and the second dengue vaccine is a recombinant dengue subunit vaccine, a DNA vaccine, a conjugate vaccine, or an inactivated dengue vaccine; wherein the genome of the live attenuated dengue virus or the live attenuated chimeric dengue virus comprises a 30 nucleotide deletion of the TL2 stem-loop structure of the 3′ untranslated region. The dengue virus vaccine compositions of the invention may further 10 comprise one or more adjuvants. In preferred embodiments of the invention, the first and the second dengue vaccine are tetravalent. The invention also relates to methods of using the dengue virus vaccine compositions of the invention to treat or prevent dengue infection, or to prevent, ameliorate, or delay the onset or progression of the clinical manifestations thereof.

A vaccine composition for prophylaxis and treatment of Chikungunya virus infections is disclosed which is capable of conferring immunity against any genotypic variants of the Chikungunya virus. More particularly the invention discloses particular nucleotide sequences and their translated proteins thereof, which may be expressed as Virus Like Particles which for use as a vaccine antigens against Chikungunya virus infections. The compositions disclosed in this invention are also protective against any genotypic variants of the Chikungunya virus which may be propagated by any suitable vector of the disease including Aedis albopictus and Aedis aegypti.

The present disclosure generally relates to novel epitope-based compositions, including vaccines, against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and diseases caused by SARS-CoV-2, including the highly contagious coronavirus disease 2019 (which has been termed and may be referred to herein as “COVID-19”, “2019-nCoV”, or the “2019 novel coronavirus”. The disclosure relates to immunogenic polypeptides and the uses thereof, particularly in vaccine compositions. The disclosure also relates to nucleic acids, vectors, and cells which express the polypeptides and the uses thereof. The polypeptides more specifically comprise an agretope predicted to be a ligand of HLA class I and/or HLA class II MHC molecules, as well as an epitope that is predicted to be recognized by T-cells in the context of MHC class I and/or class II molecules. The compositions are particularly suited to produce vaccines, particularly for vaccinating against SARS-CoV-2 infection and related diseases caused by SARS-CoV-2, including COVID-19.

The present invention describes immunogenic compositions containing immunogenic polypeptides of Rabbit Haemorrhagic Disease Virus (RHDV), including immunogenic compositions containing antigens other than RHDV antigens, including antigens that may be used in immunization against pathogens that cause diarrheal diseases. Methods of eliciting an immune response with the immunogenic compositions as disclosed and methods of treating a RHDV infection are also described.

The present invention relates to pharmaceutical compositions comprising a mixture of a specific HIV antigen and a non-pathogenic living bacterium. Said specific HIV antigen comprises one or more epitopes from Gag and/or Pol proteins and is preferably under a particulate form. Said bacterium is preferably Lactobacillus plantarum. These compositions are useful for preventing and/or treating an HIV disease in humans.

In one aspect, the invention relates to a composition including a first polypeptide having the sequence set forth in SEQ ID NO: 1 and a second polypeptide having the sequence set forth in SEQ ID NO: 2. In one embodiment, the composition includes about 120 μg/ml of a first polypeptide including the amino acid sequence set forth in SEQ ID NO: 1, 120 μg/ml of a second polypeptide including the amino acid sequence set forth in SEQ ID NO: 2, about 2.8 molar ratio polysorbate-80 to the first polypeptide, about 2.8 molar ratio polysorbate-80 to the second polypeptide, about 0.5 mg/ml aluminum, about 10 mM histidine, and about 150 mM sodium chloride. In one embodiment, a dose of the composition is about 0.5 ml in total volume. In one embodiment, two-doses of the composition induce a bactericidal titer against diverse heterologous subfamily A and subfamily B strains in a human.

The present invention discloses dry formulations of room temperature stable vaccines that comprise a live attenuated virus, a sugar stabilizer, and an amino acid stabilizer. The present invention also discloses the manufacture of such vaccines and methods of protecting an animal by administration of such vaccines.

The present invention provides a composition and method for treating diseases associated with demyelination of the nerves, such as ALS, RA, Tremors/Parkinson's Disease, and MS, Alzheimer's disease, ALS, Guillain-Barre syndrome, atherosclerosis, schizophrenia, Tremors/Parkinson's disease, senile dementia, Muscular Dystrophy, Attention Deficit Disorder, Attention Deficit Hyperactivity Disorder, Complex Regional Pain Syndrome, Diabetes, Neuropathic Pain, Spider Arthritis West Nile Virus,, Fibromyalgia, Shingles, Gout, Migraine Headaches, Post Polio Syndrome, Central Virus Deafness, Asthma, Chronic Pain Of Unknown Origin and Hepatitis C and for treating non-viral based cancers. By administering measured doses of an immunity-provoking agent and a bacterial antigen activator, patients suffering from ALS, RA, MS, Tremors/Parkinson's Disease, and prostate cancer and others realized immediate beneficial results with no side effects.