Protecting poultry from avian influenza, Newcastle disease, infectious bronchitis, and Gumboro disease with a single dose of a multivalent vaccine
Lead Research Organisation:
The Pirbright Institute
Department Name: Avian Influenza
Abstract
Poultry is one of the fastest-growing sectors that is playing a major role in the provision of food security, economic development and poverty reduction. The demand for poultry meat and eggs has been increasing exponentially in recent years with the current annual population of poultry reaching over 50,000 million. This estimates that poultry production continues to grow by 24% in the next decade. However, the biggest threat in the sustainability of poultry production is the hyper prevalence of a multitude of infectious pathogens, such as different subtypes (H5, H7 and H9) of avian influenza viruses (AIV), Newcastle disease virus (NDV) and infectious bronchitis virus (IBV) and infectious bursal disease virus (IBDV). An estimated production loss from these pathogens account for at least 20% in many regions around the globe. Primarily, the control against these diseases is achieved through vaccination. However, the effectiveness of most of the current vaccines is suboptimal, where they may only reduce the manifestation of clinical disease and mortality, but infected animals continue to shed viruses resulting in a continual chain of infections to susceptible naïve and vaccinated animals resulting in reduced weight gain in meat birds and reduced egg production and quality in layers and breeder flocks. For example, despite the hyper deployment of multiple repeated doses of each vaccine for each target disease, the manifestation of pathogens continues in the form of endemic prevalence and farmers continue to bear debilitating losses with sometimes up to 100% flock mortality or loss of egg production and zoonotic infection threats in the case of AIV.
Current vaccines carry several inherent drawbacks including (i) one vaccine per disease which require multiple vaccinations and multiple bird handling resulting in expensive vaccination programmes; (ii) vaccines are given to chickens during the first three weeks of age, during this time period, birds carry maternally derived antibodies (MDA) which interferes with the vaccine performance and the efficacy of vaccines is reduced significantly; (iii) vaccines are produced in the eggs that are not ideal and requires replacement with cell culture systems; (iv) vaccines are not compatible for easy differentiation of infected from vaccinated animals (DIVA), therefore, disease-free status cannot be reclaimed easily in endemic disease regions. Therefore, new innovative vaccines are needed that could overcome these challenges.
This proposal plans to address these challenges and to develop a multivalent vaccine formulation that offers protection to chickens from up to six major pathogens (AIV-H5, AIV-H7, AIV-H9, NDV, IBV, IBDV). This project will be built on our novel Target Antigen Delivery Vaccine (TADV) platform which selectively delivers vaccine antigens to chicken immune cells and potentiate antigen-specific immune response. Our studies have provided evidence that a single dose of our TADV vaccine containing modified haemagglutinin (HA) antigen fused to the antibody that specifically binds to chicken antigen-presenting cells (APCs) induced significantly faster, higher and more durable immune response in MDA positive chickens compared to the untargeted counterpart or the conventional killed virus vaccines. Here, we will use our TADV technology and develop a multivalent TADV formulation in which a single dose will contain up to six immunogenic antigens from different viruses including (AIV-H5, AIV-H7, AIV-H9, NDV, IBV, IBDV). This multivalent vaccine can be delivered to day-old chickens at the hatchery overcoming MDA inference and inducing highly protective immunity in vaccinated birds. Availability of such novel protective and cost-effective disease control tools and strategies should minimise the impact of infectious diseases on farm animals, and offer substantial indirect economic, public health, environmental and social benefits globally.
Current vaccines carry several inherent drawbacks including (i) one vaccine per disease which require multiple vaccinations and multiple bird handling resulting in expensive vaccination programmes; (ii) vaccines are given to chickens during the first three weeks of age, during this time period, birds carry maternally derived antibodies (MDA) which interferes with the vaccine performance and the efficacy of vaccines is reduced significantly; (iii) vaccines are produced in the eggs that are not ideal and requires replacement with cell culture systems; (iv) vaccines are not compatible for easy differentiation of infected from vaccinated animals (DIVA), therefore, disease-free status cannot be reclaimed easily in endemic disease regions. Therefore, new innovative vaccines are needed that could overcome these challenges.
This proposal plans to address these challenges and to develop a multivalent vaccine formulation that offers protection to chickens from up to six major pathogens (AIV-H5, AIV-H7, AIV-H9, NDV, IBV, IBDV). This project will be built on our novel Target Antigen Delivery Vaccine (TADV) platform which selectively delivers vaccine antigens to chicken immune cells and potentiate antigen-specific immune response. Our studies have provided evidence that a single dose of our TADV vaccine containing modified haemagglutinin (HA) antigen fused to the antibody that specifically binds to chicken antigen-presenting cells (APCs) induced significantly faster, higher and more durable immune response in MDA positive chickens compared to the untargeted counterpart or the conventional killed virus vaccines. Here, we will use our TADV technology and develop a multivalent TADV formulation in which a single dose will contain up to six immunogenic antigens from different viruses including (AIV-H5, AIV-H7, AIV-H9, NDV, IBV, IBDV). This multivalent vaccine can be delivered to day-old chickens at the hatchery overcoming MDA inference and inducing highly protective immunity in vaccinated birds. Availability of such novel protective and cost-effective disease control tools and strategies should minimise the impact of infectious diseases on farm animals, and offer substantial indirect economic, public health, environmental and social benefits globally.
Publications
Carter T
(2024)
The Influenza A Virus Replication Cycle: A Comprehensive Review
in Viruses
Dascalu S
(2022)
The influences of microbial colonisation and germ-free status on the chicken TCRß repertoire.
in Frontiers in immunology
| Description | This project addresses significant challenges in the poultry industry posed by viral pathogens, including avian influenza viruses (AIVs) H5, H7, and H9, Newcastle disease virus (NDV), infectious bronchitis virus (IBV), and infectious bursal diseases virus (IBDV). Despite the pivotal role of vaccination, current vaccines often fall short in providing optimal protection. Repeated doses do not prevent infection, resulting in persistent infections, reduced weight gain, decreased egg production, and the excretion of infectious viruses into the environment. Our project utilizes the innovative Target Antigen Delivery Vaccine (TADV) technology, delivering multiple vaccine antigens selectively to chicken immune cells, enhancing antigen-specific immune responses. Research outputs confirm that the "multivalent TADV formulation," integrating multiple antigens into a single vaccine dose, induces robust protective immunity against various poultry viruses, including AIV-H5, AIV-H7, AIV-H9, NDV, IBV, and IBDV. This groundbreaking data was presented at international meetings, such as the World Veterinary Poultry Association (WVPA) and Global Alliance for Research on Avian Diseases (GARAD). These meetings attracted diverse stakeholders, including international and national poultry vaccine manufacturers, the Veterinary Medicines Directorate (which licenses vaccines), veterinary practices, wholesalers, health workers, researchers, farmers, and representatives from agencies such as BBSRC, MRC, Defra, OIE, and WHO. Various vaccine producers and farmers expressed keen interest in implementing our new vaccine technology for commercial production. The adoption of our next-generation vaccines promises a cost-effective solution against major avian pathogens, offering substantial economic benefits to farming communities globally. |
| First Year Of Impact | 2023 |
| Sector | Agriculture, Food and Drink,Creative Economy,Education,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology |
| Impact Types | Societal Economic Policy & public services |
| Description | Evaluate the potential of AstraZeneca's sialic acid tag technology for treating influenza viruses with Fc molecules |
| Organisation | Liverpool School of Tropical Medicine |
| Department | Parasite Immunology Liverpool |
| Country | United Kingdom |
| Sector | Public |
| PI Contribution | Established partnership to investigate the antiviral properties of novel antiviral ( fragment-crystallisable (Fc) molecules) compounds that potentially block influenza virus infection. These compounds will be used to test their antiviral activity against avian influenza and Newcastle Disease virus that are causing sever economic looses to the poultry industry. |
| Collaborator Contribution | The Partners have developed these antiviral compounds and showed that these compounds bids to specific cell surface receptors that are required by the virus to bind to and enter into the cell to cause infection. |
| Impact | Project is just started |
| Start Year | 2022 |
| Description | FLU-Trailmap: Transmission and risk of avian influenza: learning more to advance preparedness |
| Organisation | Animal and Plant Health Agency |
| Country | United Kingdom |
| Sector | Public |
| PI Contribution | This project brought together eight leading scientific organizations in the UK to develop strategies for mitigating bird flu. Its main objective is to devise tools that bridge significant knowledge gaps concerning the virus's prevalence in wild birds and the factors leading to its emergence in poultry. We are exploring molecular determinants potentially related to changes in virus virulence, antigenicity, cross-species transmission, and the capacity to infect humans. |
| Collaborator Contribution | The partners provided field samples and sequence data of viruses isolated from disease outbreaks. This data was used to identify molecular determinants linked to virus phenotype changes. |
| Impact | At the frontline, ethnographic surveys were designed and implemented to understand farmers perceptions of farm biosecurity. Studies highlighted the need for an improved understanding of key biosecurity risk points and the implementation of effective biosecurity practices. Outputs showed that high quality facilities and management systems can be undermined by weaknesses in procedural compliance. As such, targeted farm worker education could help mitigate against future incursions which will be addressed in the follow-on research programme, FLUTRAILMAP. Recent work indicates that farm-to-farm spread is rare and that the virus is not spread long distances as an aerosol. Linked to biosecurity, virulence for poultry and the potential role of airborne spread of the virus was evaluated. Active sampling on infected premises across different hosts supported the experimental evaluation of pathogenesis and transmission (FLUMAP: Pathogenesis) by demonstrating that this virus is not spread long distances by the aerosol route (FLUMAP: Aerosol). Further, studies demonstrated that different bird species represent different risk levels for excretion of infectious material and potential transmission routes (FLUMAP: Gannets; FLUMAP: Environment; Pheasants). Ultimately, experimental, field and genetic data supported a lack of aerosol spread between premises. In support of this, genetic analysis of over 800 full bird flu virus genomes demonstrated that farm-to-farm spread was very rare with independent incursions from wild birds driving infection in poultry (FLUMAP: Genetics; Phylodynamics). Several genetic characteristics were identified that expanded our knowledge, explaining the explosive success of the current H5N1 bird flu viruses to spread fast and infect a greater range of bird species including a shift of infection dynamics to affect seabirds (FLUMAP: Infection dynamics) and via long distance and transatlantic spread (Transatlantic). These traits have contributed to the current H5N1 viruses having increased fitness across multiple species. Contemporary H5N1 viruses have enhanced fitness to infect, transmit and persist in birds, but remain of low risk to humans (FLUMAP: Characterization; Human Case). This project has defined a role for multiple virus genes which have switched and evolved over time to act together in a highly efficient manner. To better understand key species that may tolerate infection with this virus in the absence of clinical disease, sampling of hunter harvested wild birds was undertaken. Virus positive birds were detected in a small subset of Teal, Wigeon, and Pink-Footed Geese although carcasses were not available to evaluate the distribution of virus in these birds (Healthy birds). Further assessment of different avian species using this approach are planned. Gannet populations around the UK have been severely impacted by High Pathogenicity Avian Influenza (HPAI), at Bass Rock the number of occupied nest sites decreased by over 70%. Linked to the detection of the virus in apparently healthy birds, interrogating survival from infection, and in particular the role of antibodies in birds that may have been infected, but survived infection was a key interest (FLUMAP: Gannets). FLUMAP has enabled the development of a suite of laboratory tools that will enable us to dissect the immune response in birds that may have been exposed to multiple and different influenza viruses in their lifetime. Tools are now available to dissect antibody responses to each of the two different viral surface proteins (both individually and in tandem). How these two different viral coat proteins interact with each other and what optimal protein combinations mean with respect to stability of interaction has also been assessed. These tools will enable a better understanding of how different key surface proteins drive immune responses and what that means where viruses emerge containing different coat proteins. The periodic switching of the neuraminidase (NA) protein (i.e., N8 to N1) is an important factor in influencing the emergence of new strains and the tools developed in FLUMAP will enable the impact of these genetic reassortment events to be assessed. Whilst further outputs are realised from the FLUMAP project, the follow-on project, FLUTRAILMAP, will enable the application of these data to this continually emerging global situation and will enable better prevention and mitigation approaches to be defined. |
| Start Year | 2023 |
| Description | PARTNERSHIP: Nanoparticle Vaccines Against Emerging Poultry Infections |
| Organisation | University of Wisconsin-Madison |
| Department | Department of Pathobiological Sciences |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | We established a joint project with School of Veterinary Medicine, University of Wisconsin, Madison, USA. My team will contribute in the development of Novel Target antigen delivery vaccines that selectively delivers antigens to the chicken immune cells and induces faster and stronger immune responses in vaccinated chickens. |
| Collaborator Contribution | The partner developed a novel DNA nano-vaccine platform. This partnership will merge both technologies to enhance both the potency and delivery systems for poultry vaccines. |
| Impact | The partnership submitted a joint research grant proposal to USDA-NIFA-AFRI (Program A1181 Agricultural Biosecurity) entitled "Partnership: Nanoparticle Vaccines Against Emerging Poultry Infections". This grant proposal has been approved by the funders. |
| Start Year | 2022 |
| Description | Placement Studentship: Production and characterisation of nanobodies recognising avian influenza and Newcastle disease virus surface glycoproteins using phage display technology |
| Organisation | University of Bath |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Studentship allocated to Roddy Brookes producing and characterising llama nanobodies which recognise avian influenza and Newcastle disease virus surface glycoproteins, using our established methods of phage display technology. |
| Collaborator Contribution | Supervisory contributions, expertise and research guidance for undergraduate placement, attributed to the Bachelor of Science award. |
| Impact | On-going. |
| Start Year | 2023 |
| Description | TrailMap-One Health |
| Organisation | Imperial College London |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | The highly pathogenic avian influenza virus H5N1 clade 2.3.4.4b is panzootic in birds. Its widespread geographical distribution, sheer numbers of infections and frequent incursions in mammals indicate it to be a virus with pandemic potential. We are working as a consortium to achieve a coordinated in-depth risk assessment of clade 2.3.4.4b viruses particularly zoonotic potential of the current clade 2.3.4.4b H5N1 viruses. |
| Collaborator Contribution | The collaborating partners are jointly providing data and samples necessary for evaluating the threat posed by H5N1 Clade 2.3.4.4b highly pathogenic avian influenza viruses (HPAIV) to human health. This effort aims to understand the risks, potential spillover routes into humans, the virus's capacity to adapt for human transmission, and the probable severity of human infections should they occur. We will meet these objectives through three interconnected work packages: (1) assessing the infection likelihood in non-human mammals that could serve as bridging species, (2) evaluating the risk of direct or adapted virus spillover infections in humans, and (3) examining the potential for Clade 2.3.4.4b H5N1 viruses to become transmissible among humans. |
| Impact | The work is currently in its initial stages, with anticipated outcomes expected by the end of this current year, 2024/2025. |
| Start Year | 2024 |
| Description | Understanding animal health threats from emerging H5 high pathogenicity avian influenza viruses |
| Organisation | Animal and Plant Health Agency |
| Country | United Kingdom |
| Sector | Public |
| PI Contribution | This is a collaborative research project funded by the UKRI-BBSRC to understand how the high pathogenicity Avian Influenza virus (H5N1) persisting in different species of wild birds and transmits from wild birds to farmed poultry, the gaps in biosecurity that allow the virus to penetrate premises, and how this could be addressed. My team contributing by by generating research reagents (such as viruses generated using reverse genetic technique) that allows the identification of molecular markers in the virus genes responsible for virus virulence, transmission and/or antigenic change. The data generated helped the partners to utilise the viruses and reagents for testing their biological behaviors ( such as infectivity and transmission parameters) via animal infection studies. The outcome of this collaborative work will provide insights for assessing threats from new and emerging strains, enabling national and international agencies to design and execute contingencies as part of risk mitigation and disease control. This will provide vital information when considering how to invest scarce resources for surveillance design aimed at early warning of the threat. |
| Collaborator Contribution | The collaboration enhance both the capacity of my team by providing field data ( such as sequences of viruses isolated from the field) and reagents such as post-infection antiserum containing antibodies specific to the field virus. This allowed the investigation of field virus antigenic profiles that can be used for selection of candidate vaccine seeds for the production of effective vaccines. |
| Impact | The data generated provided a risk assessment of contemporary H5Nx HPAIVs that are acquiring adaptive changes to increase fitness within domestic and wild avian populations. This partnership identified viral and host factors that potentially contribute to increased transmissibility, persistence, and pathogenicity in wild birds and those that enhance their potential to disseminate and manifest disease in poultry. We identified genetic changes that drive the virological, immunological, and zoonotic infection potential of these H5N1 viruses. The data generated allowed us an establishment of current and future risks from these viruses to both animals and humans if they continue to remain prevalent in wild bird populations. |
| Start Year | 2022 |
| Description | Avian Influenza Research at Pirbright |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker to the Animal Diseases Surveillance and Control Team at The Department for Environment, Food, and Rural Affairs (DEFRA), London, UK sharing the research goals and achievements performed at the Pirbright Institute. The topics focused on (i) understanding the genetic and antigenic evolution of avian influenza viruses, (ii) drivers of zoonotic potential, (iii) improvement of poultry vaccine potency, (iv) investigating molecular markers of antigenic variants, (v) improving avian influenza detection and diagnostic approaches, e.g. lateral flow devices and (vi) development of novel vaccine candidates to improve protective efficacy including vector- and multivalent-based vaccines and targeted delivery of antigens. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Avian Influenza Vaccines Research at Pirbright |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Policymakers/politicians |
| Results and Impact | Delivered a presentation to key research grant funders and stakeholders in the UK, including BBSRC and DEFRA, associated with animal welfare, disease control, and the research goals and achievements performed at the Pirbright Institute. The topics focused on (i) understanding the genetic and antigenic evolution of avian influenza viruses, (ii) drivers of zoonotic potential, (iii) improvement of poultry vaccine potency, (iv) investigating molecular markers of antigenic variants, (v) improving avian influenza detection and diagnostic approaches, e.g. lateral flow devices and (vi) development of novel vaccine candidates to improve protective efficacy including vector- and multivalent-based vaccines and targeted delivery of antigens. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Avian Influenza: Global Situation & Control Strategies |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker at the International Symposium on Poultry Health Challenges in Pakistan. Organized by the World Veterinary Poultry Association (WVPA-Pakistan Branch) at Serena Hotel Faisalabad, Pakistan. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | Avian flu: our food chain is in crisis. |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | The New paper "Telegraph" correspondent Sarah Newey (GLOBAL HEALTH SECURITY CORRESPONDENT) Interviewed Professor munir Iqbal regarding the impacts and threats of current wave if high pathogenicity avian influenza virus causing disease widespread losses to poultry production, mortality of wild birds and mammalian species (otters, foxes, minks sealions), The discussion focus on the impacts of avian influenza infections on the livelihood of farming comunities and threat of zoonotic infection to wider public. |
| Year(s) Of Engagement Activity | 2023 |
| URL | https://www.telegraph.co.uk/global-health/science-and-disease/what-bird-flu-pandemic-killedmillions-... |
| Description | Bird flu: What is it and what's behind the outbreak? ( BBC New) |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | Discussion with BBC News Editors (Helen Briggs & Jeremy Howell). As the The world is going through its worst-ever outbreak of bird flu which led the deaths of hundreds of thousands of wild birds and millions of domestic ones. It is also being found in mammals, so what are the threats from this virus to economy, food security, animal welfare and public health. |
| Year(s) Of Engagement Activity | 2023 |
| URL | https://www.bbc.co.uk/news/science-environment-63464065 |
| Description | Controlling and monitoring Avian Influenza in poultry |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Industry/Business |
| Results and Impact | Engagement with veterinarian and farmers involved in poultry production. The discussion focused was new strategies (vaccines and diagnostics) for reducing the the impacts of high pathogenicity of avian influenza viruses. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Could Bird Flu become a pandemic? (Aljazeera TV) |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | The discussion ( Inside Story) has been impacts of high pathogenicity avian influenza on poultry and whether bird flu become a pandemic?. The inside story was presented by Al Jazeera English corresponded "Mohammed Jamjoom" the discussion focus remains as the world is experiencing its largest recorded outbreak of bird flu, populations of poultry and wild birds are becoming infected. So what are threats of these viruses on food supplies, economy and public health. |
| Year(s) Of Engagement Activity | 2023 |
| URL | https://www.youtube.com/watch?v=spp2Cg-jqoc |
| Description | Developing novel multivalent vaccines for poultry viral diseases |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Postgraduate students |
| Results and Impact | A talk entitled "Developing novel multivalent vaccines for poultry viral diseases" was presented to post-graduate students from Univerity of Oxford. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Developing novel multivalent vaccines for poultry viral diseases |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Postgraduate students |
| Results and Impact | Presented a talk at the Oxford University training Course on Human & Veterinary Vaccinology, UK. This talk was directed to students at the University of Oxford to teach and describe the research and challenges to overcome to enhance the efficacy of poultry-based vaccines performed at the Pirbright Institute. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | Engagement with poultry stakeholders (farmers and veterinarians at "Morocco Poultry Day"). |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Professional Practitioners |
| Results and Impact | Talk was presented to poultry stakeholders including farmers describing the new emerging technologies that increase the efficacy of poultry vaccines, in particular vaccines against Avian influenzas and Newcastel disease virus,.The meetings was attended over 80 participates. |
| Year(s) Of Engagement Activity | 2024 |
| Description | Enhancing the Potency of Poultry Vaccines by Selectively Targeting Antigens to Chicken Antigen-Presenting Cells |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker at the Faculty of Veterinary Medicine, Ludwig-Maximilians-University of Munich, Munich, Germany. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. Our research on our newly developed targeted-delivery vaccine platform addresses these challenges by improving: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, and (6) overcome maternally derived antibodies. This platform therefore (1) enhances the efficacy, duration, and breadth of immunity, (2) reduces production losses, (3) improves cost-effectiveness, (4) improves productivity and economy, (5) improves animal welfare, and (6) reduces prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). Additionally, collaborations with industrial partners can integrate this research to adapt to new antigenic variants and/or hosts. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Improving Breadth and Duration of Immunity of Poultry Vaccines: Targeted Delivery of Antigens to Chicken Antigen Presenting Cells. |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Postgraduate students |
| Results and Impact | Talk entitled "Improving Breadth and Duration of Immunity of Poultry Vaccines: Targeted Delivery of Antigens to Chicken Antigen Presenting Cells" presented by Professor Iqbal at 2022 Yangzhou International Conference on Agriculture and Agri-Product Safety - Germplasm Innovation and Agri-Product Safety on 30th November 2022. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Improving Potency of Poultry Vaccines |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Postgraduate students |
| Results and Impact | Research outcomes were presented by Munir iqbal at the 2022 International Animal Husbandry: High quality development of animal health and animal husbandry- Virtual Scientific Conference, on 19-Nov-2022, hosted by Shandong Vocational Animal Science and Veterinary College. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Improving Vaccines against Avian Influenza and Newcastle Disease Viruses |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker at the Sino-European Modern Livestock and Poultry Industry Technical Innovation seminar and the launch of the Joint Laboratory of China and European Countries. Shandong Binzhou Animal Science & Veterinary Medicine Academy, Binzhou, China. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | Improving the efficacy of poultry vaccines |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker at the International Conference: Current Trends, Prospects & Opportunities in Vaccine Research at the Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. Our research on our newly developed targeted-delivery vaccine platform addresses these challenges by improving: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, and (6) overcome maternally derived antibodies. This platform therefore (1) enhances the efficacy, duration, and breadth of immunity, (2) reduces production losses, (3) improves cost-effectiveness, (4) improves productivity and economy, (5) improves animal welfare, and (6) reduces prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). Additionally, collaborations with industrial partners can integrate this research to adapt to new antigenic variants and/or hosts. This ensures early vaccination is possible and this vaccine platform can aid control of avian influenza in early poultry populations. |
| Year(s) Of Engagement Activity | 2024 |
| Description | Multiple talks at XXIInd World Veterinary Poultry Association Congress - WVPAC 2023, Verona, Italy |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Industry/Business |
| Results and Impact | three independent talks titled: (1) Selectively targeting antigens to chicken immune cells induces faster and very strong immunity in chicks with high levels of maternally derived antibodies, (2) The impact of avian influenza vaccination on zoonotic infections: lessons learned from the H7N9 avian influenza control, (3) Investigating molecular markers influences the haemagglutination activity of the H9N2 avian influenza viruses. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effective: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | New rapid protection bird flu vaccine |
| Form Of Engagement Activity | A magazine, newsletter or online publication |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | Article published in the magazine "Poultry World) by Freelance journalist Natalie Berkhout describing the development of a new methods have been developed to enhance the immune response that vaccines produce and reduce the amount of virus that birds shed into the environment. One technique involves tagging flu virus proteins with a marker that makes them easier for antigen-presenting cells (APCs) to capture. These immune cells can efficiently process the tagged proteins, resulting in a robust and long-lasting antiviral response in chickens. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://www.poultryworld.net/health-nutrition/health/new-rapid-protection-bird-flu-vaccine/ |
| Description | One Health: Zoonosis and Their Control Through the Use of Vaccines |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presented a talk as an invited speaker at the conference entitled "National Dialogue on Agricultural Research" at the National Agricultural Research Centre (NARC), Islamabad, Pakistan. The persistence of avian influenza viruses in bird populations increases zoonotic and pandemic risks. Research focuses on reducing prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). To address this, topics discussed included research focuses in: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Prevalence and Control of Avian Influenza Viruses in Poultry |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Industry/Business |
| Results and Impact | Presented a seminar (as an invited speaker) to poultry stakeholders including farmers and veterinarians at "Morocco Poultry Day" organised by Boehringer-Ingelheim in Tangier, Morocco. Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2024 |
| Description | Preventing and controlling avian influenza infections in poultry and humans |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effectiveness: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | Recombinant vaccines against avian viral diseases affecting poultry |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Poultry production continues to face several challenges caused by avian influenza, including: (1) virus evolution & antigenic diversity, (2) emergence of new virus variants, (3) co-circulation of multiple variants of same pathogen, (4) mixed infection of different viruses (immunosuppression), (5) maternally derived antibody interference, and (6) poor quality vaccines and sub-optimal vaccination practices. From these challenges, the topic of discussion and research drives optimal vaccination strategies to improve: (1) potency: a single dose to induce faster, stronger and durable immunity against multiple pathogens, (2) effective: protect from clinical disease, reduced shedding and transmission, (3) affordability: cheap to produce and easy to deliver, (4) safety: no adverse impact to host or environment, (5) stability: retain efficacy for at least 1 year at indicated temperature, (6) DIVA: to allow differentiation between infected and vaccinated animals. Implementing new emerging vaccine approaches can: (1) enhance the efficacy, duration, and breadth of immunity, (2) reduce production losses, (3) improve cost-effectiveness, (4) improve productivity and economy, (5) improve animal welfare, and (6) reduce prevalence of viruses and protect public health (reduced virus prevalence = reduced zoonosis). |
| Year(s) Of Engagement Activity | 2023 |
| Description | Targeted Antigen Delivery Vaccines: Next Generation Vaccines for Poultry |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Policymakers/politicians |
| Results and Impact | A talk entitled "Targeted Antigen Delivery Vaccines: Next Generation Vaccines for Poultry" presented to the Executive Chair of the Biotechnology and Biological Sciences Research Council. The discussion aim was the advances approaches that can increases the strength and breath of vaccine immunity in animals and humans. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Time for rethink on farming poultry as experts warn bird flu has slipped 'through our fingers (Sky News) |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | Discussion with Sky New UK corresponded Tom Clarke (Science and technology editor @aTomClarke) on continued avian influenza viruses are becoming endemic in bird populations in Europe and North America with some areas seeing a 600% increase in infection over the past few months in September -November 2022. In the UK, every day now, two or three new premises have been testing positive for bird flu. If they do, their flocks are culled and over 50 million birds culled in Europe this year and a similar number in North America. There is a need for an improved disease control strategies against these viruses. just culling of infected and at risk will not reduce viruses prevalence and spread, because virus in circulating in wild birds. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://news.sky.com/story/time-for-rethink-on-farming-poultry-as-experts-warn-bird-flu-has-slipped-... |
| Description | Why wet markets will never close - despite the global threat to human health (The Telegraph) |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | This discussion was due to current enormous global spread of bird flu and widespread poultry outbreak has generated unprecedented opportunities for the virus to jump to humans and potentially even mutate to better spread between people. Since the Live bird markets have been identified as key factors in the spread, persistence and evolution of avian influenza viruses,. Therefore, there is an increased risk to public at the live birds markets and how these risks can be reduced to increase food safety, security and public health. |
| Year(s) Of Engagement Activity | 2023 |
| URL | https://www.telegraph.co.uk/global-health/science-and-disease/why-wet-markets-will-never-close-despi... |