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 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.

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 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.

Embodiments of the disclosure concern systems, methods, and/or compositions for cultivation of mammalian viruses, including at least human noroviruses and sapoviruses within the Caliciviridae family of viruses. The ex vivo culture systems include intestinal enteroids in combination with bile or a functionally active fraction or component thereof. In specific embodiments, the culture system is utilized to test inactivation compounds for therapeutic or environmental efficacy and to test contaminated comestibles and/or environmental entities for determination of the presence of infectious virus. Furthermore, antiviral compositions may be tested using systems of the disclosure, including drugs, small molecule inhibitors, and biologics such as neutralizing monoclonal antibodies.

Embodiments of the disclosure concern systems, methods, and/or compositions for cultivation of mammalian viruses, including at least human noroviruses and sapoviruses within the Caliciviridae family of viruses. The ex vivo culture systems include intestinal enteroids in combination with bile or a functionally active fraction or component thereof. In specific embodiments, the culture system is utilized to test inactivation compounds for therapeutic or environmental efficacy and to test contaminated comestibles and/or environmental entities for determination of the presence of infectious virus. Furthermore, antiviral compositions may be tested using systems of the disclosure, including drugs, small molecule inhibitors, and biologics such as neutralizing monoclonal antibodies.

Methods of purifying virus-like particles (VLPs) that are substantially free of process contaminants and infectious agents. The methods incorporate, for example, low-pH treatment during harvest and/or inactivation by a solvent and/or detergent during VLP capture.

Methods of purifying virus-like particles (VLPs) that are substantially free of process contaminants and infectious agents. The methods incorporate, for example, low-pH treatment during harvest and/or inactivation by a solvent and/or detergent during VLP capture.

Embodiments of the disclosure concern systems, methods, and/or compositions for cultivation of mammalian viruses, including at least human noroviruses and sapoviruses within the Caliciviridae family of viruses. The ex vivo culture systems include intestinal enteroids in combination with bile or a functionally active fraction or component thereof. In specific embodiments, the culture system is utilized to test inactivation compounds for therapeutic or environmental efficacy and to test contaminated comestibles and/or environmental entities for determination of the presence of infectious virus. Furthermore, antiviral compositions may be tested using systems of the disclosure, including drugs, small molecule inhibitors, and biologics such as neutralizing monoclonal antibodies.

Methods for purifying human Calciviruses are disclosed, including Noroviruses and Sapoviruses.