The present application relates to composition of matter, processes and use of composition of matter relating to flavivirus proteins, peptides, and epitopes, for example, for therapeutic or preventative vaccination against one or more flavivirus serotypes or species, and/or for inducing, enhancing, or sustaining an immune response against at least one flavivirus serotype or species. The flavivirus may be for example the Zika and/or Dengue virus.

A biosensor molecule comprises: a protease amino acid sequence; at least one sensor comprising at least one sensor amino acid sequence which is responsive to at least one target molecule; and an inhibitor of the protease activity of said protease amino acid sequence; wherein the biosensor is switchable from a protease active to a protease inactive state, or from a protease inactive to a protease active state when said sensor responds to said target molecule. The biosensor protease may be a protease of a virus such as a Potyvirus or a Flavivirus wherein the inhibitor is an autoinhibitory peptide derived from the virus. The biosensor may respond to the target molecule allosterically or may be cleaved by a target protease molecule.

Provided herein are compositions, methods, and kits for detecting human Pegivirus 2 (HPgV-2). In certain embodiments, provided herein are HPgV-2 specific nucleic acid probes and primers, and methods for detecting HPgV-2 nucleic acid. In other embodiments, provided herein are HPgV-2 immunogenic composition compositions, methods of treating a subject with immunogenic HPgV-2 peptides, and methods of detecting HPgV-2 subject antibodies in a sample.

Antibodies to Zika virus (ZIKV) and dengue 1 virus (DENV1) are provided. The amino acid sequences of the antibodies may be modified. Methods for prophylaxis and/or therapy by administering the antibodies and combinations thereof are provided. Immunological detection methods using the antibodies are provided. Also provided are vaccine compositions which comprise peptides derived from ZIKV and DENV1.

This disclosure relates to Theiler's disease-associated virus (“TDAV”), reagents relating thereto, and methods for detecting, using, and/or treating diseases associated with TDAV.

Antibodies to Zika virus (ZIKV) and dengue 1 virus (DENV1) are provided. The amino acid sequences of the antibodies may be modified. Methods for prophylaxis and/or therapy by administering the antibodies and combinations thereof are provided. Immunological detection methods using the antibodies are provided. Also provided are vaccine compositions which comprise peptides derived from ZIKV and DENV1.

The present invention relates to a peptide immunogen, comprising at least one copy of amino acid sequence RCPTTGE (called JBP). The peptide immunogen of present invention can induce an effective immune response to two or more mosquito-borne flavivirus. The present invention also provides mono/multivalent virus vaccines to protect animal against multiple mosquito-borne flavivirus infection, including diseases caused by Japanese encephalitis virus (JEV), West Nile virus (WNV), Dengue Virus (DENV), and Zika virus (ZIKV) infections.

Antibodies to Zika virus (ZIKV) and dengue 1 virus (DENV1) are provided. The amino acid sequences of the antibodies may be modified. Methods for prophylaxis and/or therapy by administering the antibodies and combinations thereof are provided. Immunological detection methods using the antibodies are provided. Also provided are vaccine compositions which comprise peptides derived from ZIKV and DENV1.

Provided herein are compositions, methods, and kits for detecting human Pegivirus 2 (HPgV-2). In certain embodiments, provided herein are HPgV-2 specific nucleic acid probes and primers, and methods for detecting HPgV-2 nucleic acid. In other embodiments, provided herein are HPgV-2 immunogenic composition compositions, methods of treating a subject with immunogenic HPgV-2 peptides, and methods of detecting HPgV-2 subject antibodies in a sample.

Disclosed is an immunogen comprising a fusion protein, wherein the fusion protein comprises a Zika virus (ZIKV) envelope protein, optionally a signal peptide, and a multimerization domain. The signal peptide is a premembrane (prM) signal peptide, an IgG signal peptide, or a human secretory signal peptide hidden Markov model, and the multimerization domain is an immunoglobulin Fc domain, a T4 fibritin foldon trimerization domain, or a human collagen XV trimerization domain. Nucleic acids, vectors, and microneedle arrays including these compositions are disclosed. Methods of producing an immune response to ZIKV are also disclosed.