The present invention is directed to methods and compositions for norovirus therapeutics, such as vaccines, and diagnostics.

Nucleic acids encoding norovirus VP1 fusion proteins and VLPs comprising the norovirus VP1 fusion proteins are provided. Methods for norovirus VP1 fusion protein and norovirus VLP production in plants are also described. The VP1 fusion protein comprises, a first sequence encoding an S domain derived from a first norovirus strain, and a second sequence encoding a P domain derived from a second norovirus strain.

The present invention relates to single dose parenteral vaccine compositions comprising mixtures of monovalent Norovirus virus-like particles. Methods of conferring protective immunity against Norovirus infections in a human subject by administering such compositions are also disclosed.

The present invention describes immunogenic compositions containing immunogenic polypeptides of Sapovirus, including immunogenic compositions containing antigens other than Sapovirus 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 Sapovirus infection are also described.

The present disclosure provides adoptive T-cell compositions, therapies, and processes of manufacture that are tailored for treatment or prevention of a subject with a norovirus infection, and, in some embodiments, for those subjects who are candidates for hematopoietic stem cell treatments, subjects who have undergone hematopoietic stem cell treatments, and subjects that have, are diagnosed with or suspected of having primary immunodeficiency disorders.

Nucleic acids encoding norovirus VP1 fusion proteins and VLPs comprising the norovirus VP1 fusion proteins are provided. Methods for norovirus VP1 fusion protein and norovirus VLP production in plants are also described. The VP1 fusion protein comprises, a first sequence encoding an S domain derived from a first norovirus strain, and a second sequence encoding a P domain derived from a second norovirus strain.

Nucleic acids encoding modified norovirus VP1 proteins, and VLPs comprising one or more of the modified norovirus VP1 proteins are provided. Methods for modified norovirus VP1 protein, and norovirus VLP, production in plants, portions of the plant or a plant cell, are also described.

A dry powder norovirus vaccine is provided, which comprises at least two norovirus antigens representing different genogroups. The vaccine may be produced by formulation with a mixture of different antigens or combination of monovalent powders with each containing one antigen. The formulated vaccine is suitable for mucosal administration and soluble in aqueous solutions for parenteral administration. A method of immunization is also provided, which comprises at least one administration of the vaccine via mucosal and/or parental route. The immunization may have multiple administrations of the vaccine, i.e., one or more immunizations via a mucosal route followed by one or more immunizations via a parenteral route or vice versa, to maximize both mucosal and systemic immune responses and protection against norovirus infections.

An immunogenic composition comprising at least one Norovirus antigen and at least one adjuvant which is at least one B subunit of an AB.sub.5 toxin such as cholera toxin subunit B (CTB) or the B subunit of heat-labile E. coli exotoxin LT (LTB).

The disclosure relates to immunoglobulin variants that are useful for the design of vaccinations against a variety of athogens and their method of production and use. In some aspects, the immunoglobulin variants are variants of IgG, for example, the 6D8 antibody.