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Review of Poultry Recombinant Vector Vaccines
Ruud Hein1, Rik Koopman2, Maricarmen García3
1Consultant Poultry Diseases Molecular Vaccine Technology Georgetown DE 19947, r.hein@mchsi.com.
Avian Diseases
|October 26, 2021
Summary
Recombinant DNA technology has revolutionized poultry vaccines, using viral vectors to combat multiple diseases safely and effectively. This approach offers a promising future for avian disease control.
Area of Science:
- Veterinary Virology
- Molecular Biology
- Immunology
Background:
- Traditional poultry disease control relies on live and inactivated vaccines.
- Recombinant DNA technology has enabled the development of novel poultry vaccines over the past 30 years.
- Fowlpox virus and turkey herpesvirus are key viral vectors for creating these advanced vaccines.
Purpose of the Study:
- To review the safety and efficacy of recombinant viral vectored vaccines in poultry.
- To explore the mechanisms by which these vaccines control multiple avian diseases.
- To briefly discuss the development of new recombinant vaccines utilizing novel vectors.
Main Methods:
- Review of scientific literature on recombinant viral vector vaccines for poultry.
- Analysis of safety and efficacy data for commercially available vaccines.
- Discussion of the immunological mechanisms underlying vaccine effectiveness.
Main Results:
- Over 15 recombinant viral vector vaccines against major poultry diseases are commercially available.
- These vaccines utilize Fowlpox virus and turkey herpesvirus vectors.
- Established vaccines target Newcastle disease, infectious laryngotracheitis, infectious bursal disease, avian influenza, and Mycoplasma gallisepticum.
Conclusions:
- Recombinant viral vectored vaccines represent a significant advancement in poultry health.
- These vaccines demonstrate safety and efficacy in controlling multiple diseases.
- Ongoing research into novel vectors promises further innovation in avian disease prevention.
Related Concept Videos
Recombinant DNA
Overview
Viral Recombination
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Vaccine Production
Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...

