The present disclosure provides a canine parvovirus (CPV) nanobody CPV-VHH-H1 and use thereof, belonging to the technical field of immunology. A heavy-chain variable region sequence of the nanobody CPV-VHH-H1 has the amino acid sequence set forth in SEQ ID NO: 1; and a gene encoding the nanobody CPV-VPP-H1 has the nucleotide sequence set forth in SEQ ID NO: 2. In the present disclosure, a nanobody immune library of the CPV is constructed by a phage display technology, a specific anti-CPV nanobody CPV-VHH-H1 is obtained by screening, and it is verified by experiments that the nanobody may specifically bind to the CPV. The present disclosure is expected to develop a new nanobody preparation for use in clinical diagnosis and treatment of the CPV, and provides a certain theoretical reserve for applying the nanobody to the field of veterinary biological products.

Described herein are methods and antibodies useful for reducing, eliminating, or preventing infection with a viral population in an animal. Also described herein are antigens useful for targeting by heavy chain antibodies and VHH fragments for reducing a viral population in an animal.

The present invention relates to a porcine parvovirus (PPV) viral protein 2 (VP2) having at amino acid position 228 a glutamic acid residue or a glutamate residue, and/or at amino acid position 414 a serine residue, and/or at amino acid position 419 a glutamine residue, and/or at amino acid position 436 a threonine residue. Further, the present invention relates to immunogenic compositions comprising said PPV viral protein 2 (VP2). Furthermore, the present invention relates to methods for immunizing a subject comprising administering to such subject the immunogenic composition of the present invention. Moreover, the present invention relates to methods of treating or preventing clinical signs caused by PPV infection in a subject of need, the method comprising administering to the subject a therapeutically effective amount of an immunogenic composition according to the present invention.

The present invention relates to a porcine parvovirus (PPV) viral protein 2 (VP2) having at amino acid position 228 a glutamic acid residue or a glutamate residue, and/or at amino acid position 414 a serine residue, and/or at amino acid position 419 a glutamine residue, and/or at amino acid position 436 a threonine residue. Further, the present invention relates to immunogenic compositions comprising said PPV viral protein 2 (VP2). Furthermore, the present invention relates to methods for immunizing a subject comprising administering to such subject the immunogenic composition of the present invention. Moreover, the present invention relates to methods of treating or preventing clinical signs caused by PPV infection in a subject of need, the method comprising administering to the subject a therapeutically effective amount of an immunogenic composition according to the present invention.

The present disclosure encompasses canine parvovirus (CPV) vaccines or compositions. The vaccine or composition may be a vaccine or composition containing CPV virus-like particle (VLP), and a preparation method and a use thereof. The CPV VLPs are formed by the CPV VP2 protein. Further, the disclosure broadly encompasses vaccines comprising combinations of MLV and VLP, which are capable of overcoming MDA against a variety of pathogens, which infect a variety of different species.

The present invention relates to a porcine parvovirus (PPV) viral protein 2 (VP2) having at amino acid position 228 a glutamic acid residue or a glutamate residue, and/or at amino acid position 414 a serine residue, and/or at amino acid position 419 a glutamine residue, and/or at amino acid position 436 a threonine residue. Further, the present invention relates to immunogenic compositions comprising said PPV viral protein 2 (VP2). Furthermore, the present invention relates to methods for immunizing a subject comprising administering to such subject the immunogenic composition of the present invention. Moreover, the present invention relates to methods of treating or preventing clinical signs caused by PPV infection in a subject of need, the method comprising administering to the subject a therapeutically effective amount of an immunogenic composition according to the present invention.

Described is a reproducible, effective and scalable process for parvovirus production including characterization strategies, preferably production of H-1PV.

The present disclosure encompasses canine parvovirus (CPV) vaccines or compositions. The vaccine or composition may be a vaccine or composition containing CPV virus-like particle (VLP), and a preparation method and a use thereof. The CPV VLPs are formed by the CPV VP2 protein. Further, the disclosure broadly encompasses vaccines comprising combinations of MLV and VLP, which are capable of overcoming MDA against a variety of pathogens, which infect a variety of different species.

Described is a reproducible, effective and scalable process for parvovirus production including characterization strategies, preferably production of H-1PV.

The present invention relates to a porcine parvovirus (PPV) viral protein 2 (VP2) having at amino acid position 228 a glutamic acid residue or a glutamate residue, and/or at amino acid position 414 a serine residue, and/or at amino acid position 419 a glutamine residue, and/or at amino acid position 436 a threonine residue. Further, the present invention relates to immunogenic compositions comprising said PPV viral protein 2 (VP2). Furthermore, the present invention relates to methods for immunizing a subject comprising administering to such subject the immunogenic composition of the present invention. Moreover, the present invention relates to methods of treating or preventing clinical signs caused by PPV infection in a subject of need, the method comprising administering to the subject a therapeutically effective amount of an immunogenic composition according to the present invention.