Download or read book Cross reactive Immunity to Porcine Reproductive and Respiratory Syndrome Virus and Its Contribution to Protection written by Ignacio Correas and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the vast geographical distribution and significant economic losses generated, porcine reproductive and respiratory syndrome virus (PRRSV) can be considered the most important swine pathogen of contemporary times. Current control and eradication strategies against PRRSV have difficulty succeeding because of their complex nature and the absence of an effective vaccine. A major obstacle for PRRSV vaccine development is the broad heterogeneity of the virus, both at the genetic and antigenic level, its rapid evolution, and an incomplete knowledge of the immune responses responsible for clearing the virus from the host. Specifically, how known correlates of protection against PRRSV---neutralizing antibodies and T cells---cross-react with heterologous isolates and mediate cross-protection is inadequately understood. The objectives of this dissertation were (i) to determine the extent of cross-reactivity of immune responses against PRRSV, and (ii) to ascertain how cross-reactive immune responses mediate protection against heterologous isolates. T cell responses were found to be cross-reactive among PRRSV-2 isolates, but extremely variable among individual animals, while the neutralizing antibody response induced by a single infection with PRRSV was deemed to be solely self-neutralizing. Sequential exposure to heterologous PRRSV-2 isolates elicited neutralizing antibodies to the isolates used for infection and challenge, as well as other heterologous PRRSV-2 isolates. Furthermore, prior exposure to PRRSV afforded cross-protection against heterologous challenge, with reduction in viremia, tissue viral load and the extent of microscopic lung lesions; however, protection was still suboptimal. T cell cross-reactivity between PRRSV-1 and PRRSV-2 was evaluated at the structural protein level and was deemed to be feeble or absent. Prior exposure to PRRSV-1 did not prime the T cell response against the PRRSV-2 structural proteins after PRRSV-2 challenge. Collectively, the results in this dissertation contribute to furthering the understanding of immune responses against PRRSV and may be used in the development of a better vaccine.

Download or read book Contribution of Porcine Reproductive and Respiratory Syndrome Virus Minor Glycoproteins to the Induction of a Protective Immune Response written by Kathryn A. Kimpston-Burkgren and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porcine reproductive and respiratory syndrome virus (PRRSV) is a major pathogen affecting most swine producing countries. With costs associated with PRRSV losses and the prevention of PRRSV reaching upwards of one billion dollars per year in the United States alone, PRRSV is the most economically significant swine pathogen of the last three decades. The widespread distribution of PRRSV and the diversity of the virus, as well as the lack of a broadly protective vaccine, have made PRRSV difficult to control. The protective epitopes that are targeted by the host immune response remain poorly understood and this is an area of PRRSV research that could have a large impact on the development of a broadly protective vaccine. Proteins that interact with the host cell receptors and determine cell tropisms are of particular interest because such proteins have the potential to have conserved epitopes. In the case of PRRSV, the minor glycoprotein heterotrimer composed of GP2, GP3, and GP4, interacts with the major cellular receptor for PRRSV. The objective of this dissertation was to characterize the role of the minor glycoproteins of PRRSV in the induction of protective immunity. Heterologous prime-boost immunization with GP3 expressed in viral vectors was able to induce the production of specific antibodies and an anamnestic response after challenge, but this translated to minimal protection in vivo. The generation of a PRRSV-1/PRRSV-2 chimeric virus, expressing the minor glycoproteins of a PRRSV-2 strain in a biologically relevant form, was able to induce neutralizing antibodies and GP2, GP3, and GP4 specific T cell responses which provided partial protection against challenge with the PRRSV-2 strain. A subtractive immunization protocol in mice was utilized to further confirm the ability of the minor glycoproteins to induce the production of neutralizing antibodies. The results in this dissertation confirm that the minor glycoproteins are an important target of the protective immune response and can aid in the development of an optimal vaccine against PRRSV.

Download or read book Veterinary Vaccines written by R. Pandey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vaccines have historically been considered to be the most cost-effective method for preventing communicable diseases. It was a vaccine that enabled global eradication of the dreaded disease smallpox. Mass immunization of children forms the anchor of the strategy of the World Health Organization (WHO) to attain "health for all" status by the year 2000. Vaccinology is undergoing a dimensional change with the advances that have taken place in immunology and genetic engineering. Vaccines that confer short or inadequate immunity or that have side effects are being replaced by better vaccines. New vaccines are being developed for a variety of maladies. Monoclonal antibodies and T cell clones have been employed to delineate the immunodeterminants on microbes, an approach elegantly complemented by computer graphics and molecular imaging techniques. Possibilities have opened for obtaining hitherto scarce antigens of parasites by the DNA recombinant route. Better appreciation of the idiotypic network has aroused research on anti idiotypic vaccines. Solid-phase synthesis of peptides is leading to an array of synthetic vaccines, an approach that is expected to attain its full potential once the sequences activating suppressor cells are discovered and the rules for presentation of antigens to T and B cells are better worked out. A new breed of vaccines is on the horizon that seeks to control fertility. Originally conceived to intercept a step in the reproductive process, they are conceptual models for developing approaches to regulate the body's internal processes.

Download or read book Veterinary Vaccines written by Samia Metwally and published by John Wiley & Sons. This book was released on 2021-04-01 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a concise and authoritative reference on the use of vaccines against diseases of livestock Compiled by Senior Animal Health Officers at The Food and Agriculture Organization of the United Nations, and with contributions from international leading experts, Veterinary Vaccines: Principles and Applications is a concise and authoritative reference featuring easily readable reviews of the latest research in vaccinology and vaccine immune response to pathogens of major economic impact to livestock. It covers advice and recommendations for vaccine production, quality control, and effective vaccination schemes including vaccine selection, specifications, vaccination programs, vaccine handling in the field, application, failures, and assessment of herd protection. In addition, the book presents discussions on the current status and potential future developments of vaccines and vaccination against selected transboundary animal diseases. Provides a clear and comprehensive guide on using veterinary vaccines to protect livestock from diseases Teaches the principles of vaccinology and vaccine immune response Highlights the vaccine production schemes and standards for quality control testing Offers easy-to-read reviews of the most current research on the subject Gives readers advice and recommendations on which vaccination schemes are most effective Discusses the today’s state of vaccines and vaccination against selected transboundary animal diseases as well as possible future developments in the field Veterinary Vaccines: Principles and Applications is an important resource for veterinary practitioners, animal health department officials, vaccine scientists, and veterinary students. It will also be of interest to professional associations and NGO active in livestock industry.

Download or read book Emerging and Transboundary Animal Viruses written by Yashpal Singh Malik and published by Springer. This book was released on 2020-03-05 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, which is the first volume of the book series-Livestock Diseases and Management, summarizes the prominence and implications of the emerging and transboundary animal viruses. Although the livestock plays an important role in the economy of many countries, the emerging and transboundary animal viral diseases possess a serious risk to the animal-agriculture sector and food security globally. The book describes the precise and up-to-date information on animal viral diseases which have emerged in the recent past or are re-emerging due to various environmental factors and those which are not bounded in restricted national boundaries and attained the transboundary status. The chapters summarize the recent advancements in the molecular state-of-art tools towards the development of diagnostics, prophylactics, and therapeutics of these viruses. It also explicitly describes the challenges imposed by the emerging and transboundary viral infections and our preparedness to counter them.

Download or read book Heterologous Immunity Implications and Applications in Vaccines and Immunotherapies written by Babita Agrawal and published by Frontiers Media SA. This book was released on 2020-08-27 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Virus Taxonomy written by International Committee on Taxonomy of Viruses and published by Elsevier. This book was released on 2011-10-25 with total page 1463 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practical need to partition the world of viruses into distinguishable, universally agreed upon entities is the ultimate justification for developing a virus classification system. Since 1971, the International Committee on Taxonomy of Viruses (ICTV) operating on behalf of the world community of virologists has taken on the task of developing a single, universal taxonomic scheme for all viruses infecting animals (vertebrate, invertebrates, and protozoa), plants (higher plants and algae), fungi, bacteria, and archaea. The current report builds on the accumulated taxonomic construction of the eight previous reports dating back to 1971 and records the proceedings of the Committee since publication of the last report in 2005. Representing the work of more than 500 virologists worldwide, this report is the authoritative reference for virus organization, distinction, and structure.

Download or read book Emerging Viral Diseases written by Institute of Medicine and published by National Academies Press. This book was released on 2015-03-19 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past half century, deadly disease outbreaks caused by novel viruses of animal origin - Nipah virus in Malaysia, Hendra virus in Australia, Hantavirus in the United States, Ebola virus in Africa, along with HIV (human immunodeficiency virus), several influenza subtypes, and the SARS (sudden acute respiratory syndrome) and MERS (Middle East respiratory syndrome) coronaviruses - have underscored the urgency of understanding factors influencing viral disease emergence and spread. Emerging Viral Diseases is the summary of a public workshop hosted in March 2014 to examine factors driving the appearance, establishment, and spread of emerging, re-emerging and novel viral diseases; the global health and economic impacts of recently emerging and novel viral diseases in humans; and the scientific and policy approaches to improving domestic and international capacity to detect and respond to global outbreaks of infectious disease. This report is a record of the presentations and discussion of the event.

Download or read book Emerging Swine Viruses written by Zhenhai Chen and published by Frontiers Media SA. This book was released on 2020-05-13 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Virology written by Susanne Modrow and published by Springer. This book was released on 2013-09-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a comprehensive overview on the knowledge of virus infection relevant for humans and animals. For each virus family the molecular details of the virus particle and the viral replication cycle are described. In the case of virus types with relevance for human and/or animal health the data on molecular biology, genetics and virus-cell interaction are combined with those concerning, pathogenesis, epidemiology, clinics, prevention and therapy.

Download or read book Jubb Kennedy Palmer s Pathology of Domestic Animals Volume 2 written by Grant Maxie and published by Elsevier Health Sciences. This book was released on 2015-08-14 with total page 1219 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an emphasis on the disease conditions of dogs, cats, horses, swine, cattle and small ruminants, Jubb, Kennedy, and Palmer's Pathology of Domestic Animals, 6th Edition continues its long tradition of being the most comprehensive reference book on common domestic mammal pathology. Using a body systems approach, veterinary pathology experts provide overviews of general system characteristics, reactions to insult, and disease conditions that are broken down by type of infectious or toxic insult affecting the anatomical subdivisions of each body system. The sixth edition now boasts a new full-color design, including more than 2,000 high-resolution images of normal and abnormal organs, tissues, and cells. Updated content also includes evolved coverage of disease agents such as the Schmallenberg virus, porcine epidemic diarrhea virus, and the porcine deltacoronavirus; plus new information on molecular-based testing, including polymerase chain reaction (PCR) and in-situ hybridization, keep you abreast of the latest diagnostic capabilities. - Updated content includes new and evolving pathogens and diagnostic techniques. - Updated bibliographies give readers new entry points into the rapidly expanding literature on each subject. - NEW! High-resolution color images clearly depict the diagnostic features of hundreds of conditions. - NEW! Introduction to the Diagnostic Process chapter illustrates the whole animal perspective and details the approaches to systemic, multi-system, and polymicrobial disease. - NEW! Coverage of camelids is now included in the reference's widened scope of species. - NEW! Team of 30+ expert contributors offers the latest perspective on the continuum of issues in veterinary pathology. - NEW! Expanded resources on the companion website include a variety of helpful tools such as full reference lists with entries linked to abstracts in Pub Med and bonus web-only figures. - NEW! Full-color design improves the accessibility of the text.

Download or read book Diseases of Swine written by Jeffrey J. Zimmerman and published by John Wiley & Sons. This book was released on 2019-06-18 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a fully revised Eleventh Edition of the definitive reference to swine health and disease Diseases of Swine has been the definitive reference on swine health and disease for over 60 years. This new edition has been completely revised to include the latest information, developments, and research in the field. Now with full color images throughout, this comprehensive and authoritative resource has been redesigned for improved consistency and readability, with a reorganized format for more intuitive access to information. Diseases of Swine covers a wide range of essential topics on swine production, health, and management, with contributions from more than 100 of the foremost international experts in the field. This revised edition makes the information easy to find and includes expanded information on welfare and behavior. A key reference for anyone involved in the swine industry, Diseases of Swine, Eleventh Edition: Presents a thorough revision to the gold-standard reference on pig health and disease Features full color images throughout the book Includes information on the most current advances in the field Provides comprehensive information on swine welfare and behavior Offers a reorganized format to make the information more accessible Written for veterinarians, academicians, students, and individuals and agencies responsible for swine health and public health, Diseases of Swine, Eleventh Edition is an essential guide to swine health. "The 11th edition of Diseases of Swine continues to serve as the gold-standard resource for anything and everything related to swine herd health...this edition does an outstanding job of keeping up with the advanced diagnostic technologies and the latest research on new or emerging diseases and syndromes...there is no other informational resource that comes close to providing the depth or quality of information on the topic of swine diseases as does this book"

Download or read book Learning from SARS written by Institute of Medicine and published by National Academies Press. This book was released on 2004-04-26 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emergence of severe acute respiratory syndrome (SARS) in late 2002 and 2003 challenged the global public health community to confront a novel epidemic that spread rapidly from its origins in southern China until it had reached more than 25 other countries within a matter of months. In addition to the number of patients infected with the SARS virus, the disease had profound economic and political repercussions in many of the affected regions. Recent reports of isolated new SARS cases and a fear that the disease could reemerge and spread have put public health officials on high alert for any indications of possible new outbreaks. This report examines the response to SARS by public health systems in individual countries, the biology of the SARS coronavirus and related coronaviruses in animals, the economic and political fallout of the SARS epidemic, quarantine law and other public health measures that apply to combating infectious diseases, and the role of international organizations and scientific cooperation in halting the spread of SARS. The report provides an illuminating survey of findings from the epidemic, along with an assessment of what might be needed in order to contain any future outbreaks of SARS or other emerging infections.

Download or read book Fenner s Veterinary Virology written by N. James Maclachlan and published by Academic Press. This book was released on 2010-11-26 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fenner's Veterinary, Virology, Fourth Edition, is the long awaited new edition of Veterinary Virology, 3e, which was published in 1999. Fully revised and updated by the new author team, part I presents the fundamental principles of virology related to animal infection and disease, and part II addresses the clinical features, pathogenesis, diagnosis, epidemiology and prevention of individual diseases. New to this Edition - New author team - one main author to ensure that the book reads like an authored book but with the benefit of using experts to contribute to specific topics - Text has been refocused - part I has been condensed and where appropriate incorporated into part II to make it more user friendly - The number of figures have been increased and are now in full color - Fully revised and updated to include the latest information in the field of veterinary virology - Beautifully illustrated color figures throughout - Organized and current information provided by an expert team of authors

Download or read book Cell mediated Immunity to Porcine Reproductive and Respiratory Syndrome Virus in Swine written by Elida Margoth Bautista and published by . This book was released on 1998 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Viruses and Human Disease written by Ellen G. Strauss and published by Elsevier. This book was released on 2007-09-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and updated, the new edition of this groundbreaking text integrates basic virology with pathophysiological conditions to examine the connection between virology and human disease. Most virology textbooks focus on the molecular biology involved without adequate reference to physiology. This text focuses on viruses that infect humans, domestic animals and vertebrates and is based on extensive course notes from James Strauss' virology class at the California Institute of Technology taught for over 30 years. Expertly depicting in color the molecular structure and replication of each virus, it provides an excellent overview for students and professionals interested in viruses as agents of human disease. - Includes over 30% new material - virtually all of the figures and tables have been redrawn to include the latest information and the text has been extensively rewritten to include the most up-to-date information - Includes a new chapter on emerging and reemerging viral diseases such as avian flu, SARS, the spread of West Nile virus across America, and the continuing spread of Nipah virus in Southeast Asia - Further reading sections at the end of each chapter make it easy find key references - World maps depicting the current distribution of existing and newly emerging viruses are also incorporated into the text

Download or read book Genetics and Breeding for Disease Resistance of Livestock written by Aruna Pal and published by Academic Press. This book was released on 2019-10-22 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetics and Breeding for Disease Resistance of Livestock is a solid resource that combines important information on the underlying genetic causes and governing factors for disease resistance in food animals and applications for breeding purposes. It describes genomics at each species level to help researchers and students understand disease resistance and immunology using genomics and its application in breeding for disease resistance. This useful reference makes it easy for readers to understand and undergo further research in immunology and disease resistance for livestock. It includes novel applications and research material that is ideal for students, teachers, academicians and researchers. - Presents basic principles and protocols to describe research methodologies through diagrammatic illustrations with figures, flow charts, examples, and references - Covers various disease occurrences in livestock and the methodologies available to identify the various pathogens responsible for these diseases - Includes advanced breeding techniques and practical applications