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Vickers SH, Raghwani J, Banyard AC, Brown IH, Fournie G, Hill SC. Utilizing citizen science data to rapidly assess changing associations between wild birds and avian influenza outbreaks in poultry. Proc Biol Sci 2024; 291:20241713. [PMID: 39317317 PMCID: PMC11421901 DOI: 10.1098/rspb.2024.1713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 08/05/2024] [Accepted: 08/21/2024] [Indexed: 09/26/2024] Open
Abstract
High pathogenicity avian influenza virus (HPAIV) is a rapidly evolving virus causing significant economic and environmental harm. Wild birds are a key viral reservoir and an important source of viral incursions into animal populations, including poultry. However, we lack a thorough understanding of which species drive incursions and whether this changes over time. We explored associations between the abundances of 152 avian species and outbreaks of highly pathogenic avian influenza (HPAI) in poultry premises across Great Britain between October 2021 and January 2023. Spatial generalized additive models were used, with species abundance distributions sourced from eBird. Associations were investigated at the species-specific level and across species aggregations. During autumn/winter, associations were generally strongest with waterbirds such as ducks and geese; however, we also found significant associations in groups such as non-native gamebirds and rapid change in species-specific associations over time. Our results demonstrate the value of citizen science to rapidly explore wild species as potential facilitators of disease incursions into well-monitored populations, especially in regions where viral surveillance in wild species is limited. This can be a critical step towards prioritizing targeted surveillance that could inform species-specific biosecurity measures; particularly for HPAIV, which has undergone sudden shifts in host range and continues to rapidly evolve.
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Affiliation(s)
- Stephen H. Vickers
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, HatfieldAL9 7TA, UK
| | - Jayna Raghwani
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, HatfieldAL9 7TA, UK
| | - Ashley C. Banyard
- Virology Department, Animal and Plant Health Agency, SurreyKT15 3NB, UK
- WOAH/FAO International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease, Animal and Plant Health Agency, SurreyKT15 3NB, UK
| | - Ian H. Brown
- Virology Department, Animal and Plant Health Agency, SurreyKT15 3NB, UK
- WOAH/FAO International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease, Animal and Plant Health Agency, SurreyKT15 3NB, UK
| | - Guillaume Fournie
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, HatfieldAL9 7TA, UK
- Ecosystems and Environment Research Centre, School of Science, Engineering and Environment, University of Salford, Greater Manchester, M5 4WT, UK
- Université de Lyon, INRAE,VetAgro Sup, UMR EPIA, Marcy l’Etoile, France
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR EPIA, Saint-Gènes-Champanelle, France
| | - Sarah C. Hill
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, HatfieldAL9 7TA, UK
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Bonilla-Aldana DK, Calle-Hernández DM, Ulloque-Badaracco JR, Alarcón-Braga EA, Hernández-Bustamante EA, Cabrera-Guzmán JC, Quispe-Vasquez SM, Huayta-Cortez MA, Benites-Zapata VA, Rodriguez-Morales AJ. Highly pathogenic avian influenza A(H5N1) in animals: A systematic review and meta-analysis. New Microbes New Infect 2024; 60-61:101439. [PMID: 38911488 PMCID: PMC11192795 DOI: 10.1016/j.nmni.2024.101439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/25/2024] Open
Abstract
Introduction Avian influenza A H5N1 is a significant global public health threat. Although relevant, systematic reviews about its prevalence in animals are lacking. Methods We performed a systematic literature review in bibliographic databases to assess the prevalence of H5N1 in animals. A meta-analysis with a random-effects model was performed to calculate the pooled prevalence and 95 % confidence intervals (95%CI). In addition, measures of heterogeneity (Cochran's Q statistic and I2 test) were reported. Results The literature search yielded 1359 articles, of which 33 studies were fully valid for analysis, including 96,909 animals. The pooled prevalence for H5N1 in birds (n = 90,045, 24 studies) was 5.0 % (95%CI: 4.0-6.0 %; I2 = 99.21); in pigs (n = 3,178, 4 studies) was 1.0 % (95%CI: 0.0-1.0 %); in cats (n = 2,911, 4 studies) was 0.0 % (95%CI: 0.0-1.0 %); and in dogs (n = 479, 3 studies) was 0.0 % (95%CI: 0.0-2.0 %). Conclusions While the occurrence of H5N1 in animals might be comparatively limited compared to other influenza viruses, its impact on public health can be substantial when it transmits to humans. This virus can potentially induce severe illness and has been linked to previous outbreaks. Therefore, it is essential to closely monitor and comprehend the factors influencing the prevalence of H5N1 in both avian and human populations to develop effective disease control and prevention strategies.
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Affiliation(s)
| | | | | | | | - Enrique A. Hernández-Bustamante
- Grupo Peruano de Investigación Epidemiológica, Unidad para la Generación y Síntesis de Evidencias en Salud, Universidad San Ignacio de Loyola, Lima, Peru
- Sociedad Científica de Estudiantes de Medicina de la Universidad Nacional de Trujillo, Trujillo, Peru
| | | | | | | | | | - Alfonso J. Rodriguez-Morales
- Faculty of Health Sciences, Universidad Cientifica del Sur, Lima, Peru
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
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Ellis JW, Root JJ, McCurdy LM, Bentler KT, Barrett NL, VanDalen KK, Dirsmith KL, Shriner SA. Avian influenza A virus susceptibility, infection, transmission, and antibody kinetics in European starlings. PLoS Pathog 2021; 17:e1009879. [PMID: 34460868 PMCID: PMC8432794 DOI: 10.1371/journal.ppat.1009879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 09/10/2021] [Accepted: 08/09/2021] [Indexed: 01/22/2023] Open
Abstract
Avian influenza A viruses (IAVs) pose risks to public, agricultural, and wildlife health. Bridge hosts are spillover hosts that share habitat with both maintenance hosts (e.g., mallards) and target hosts (e.g., poultry). We conducted a comprehensive assessment of European starlings (Sturnus vulgaris), a common visitor to both urban and agricultural environments, to assess whether this species might act as a potential maintenance or bridge host for IAVs. First, we experimentally inoculated starlings with a wild bird IAV to investigate susceptibility and replication kinetics. Next, we evaluated whether IAV might spill over to starlings from sharing resources with a widespread IAV reservoir host. We accomplished this using a specially designed transmission cage to simulate natural environmental transmission by exposing starlings to water shared with IAV-infected mallards (Anas platyrhynchos). We then conducted a contact study to assess intraspecies transmission between starlings. In the initial experimental infection study, all inoculated starlings shed viral RNA and seroconverted. All starlings in the transmission study became infected and shed RNA at similar levels. All but one of these birds seroconverted, but detectable antibodies were relatively transient, falling to negative levels in a majority of birds by 59 days post contact. None of the contact starlings in the intraspecies transmission experiment became infected. In summary, we demonstrated that starlings may have the potential to act as IAV bridge hosts if they share water with IAV-infected waterfowl. However, starlings are unlikely to act as maintenance hosts due to limited, if any, intraspecies transmission. In addition, starlings have a relatively brief antibody response which should be considered when interpreting serology from field samples. Further study is needed to evaluate the potential for transmission from starlings to poultry, a possibility enhanced by starling's behavioral trait of forming very large flocks which can descend on poultry facilities when natural resources are scarce.
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Affiliation(s)
- Jeremy W. Ellis
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - J. Jeffrey Root
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Loredana M. McCurdy
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Kevin T. Bentler
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Nicole L. Barrett
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Kaci K. VanDalen
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Katherine L. Dirsmith
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
| | - Susan A. Shriner
- National Wildlife Research Center—Wildlife Services, Animal Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, Colorado, United States of America
- * E-mail:
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Root JJ, Shriner SA. Avian Influenza A Virus Associations in Wild, Terrestrial Mammals: A Review of Potential Synanthropic Vectors to Poultry Facilities. Viruses 2020; 12:E1352. [PMID: 33256041 PMCID: PMC7761170 DOI: 10.3390/v12121352] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 12/24/2022] Open
Abstract
The potential role of wild mammals in the epidemiology of influenza A viruses (IAVs) at the farm-side level has gained increasing consideration over the past two decades. In some instances, select mammals may be more likely to visit riparian areas (both close and distant to farms) as well as poultry farms, as compared to traditional reservoir hosts, such as waterfowl. Of significance, many mammalian species can successfully replicate and shed multiple avian IAVs to high titers without prior virus adaptation and often can shed virus in greater quantities than synanthropic avian species. Within this review, we summarize and discuss the potential risks that synanthropic mammals could pose by trafficking IAVs to poultry operations based on current and historic literature.
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Affiliation(s)
- J. Jeffrey Root
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Fort Collins, CO 80521, USA;
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Cerda-Armijo C, de León MB, Ruvalcaba-Ortega I, Chablé-Santos J, Canales-Del-Castillo R, Peñuelas-Urquides K, Rivera-Morales LG, Menchaca-Rodríguez G, Camacho-Moll ME, Contreras-Cordero JF, Guzmán-Velasco A, González-Rojas JI. High Prevalence of Avian Influenza Virus Among Wild Waterbirds and Land Birds of Mexico. Avian Dis 2020; 64:135-142. [PMID: 32550613 DOI: 10.1637/0005-2086-64.2.135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 01/03/2020] [Indexed: 11/05/2022]
Abstract
Aquatic wild birds, especially waterfowl, have been long considered the main reservoirs of the avian influenza A virus; however, recent surveys have found an important prevalence of these viruses among land birds as well. Migration has been suggested as an important factor in the avian influenza virus dissemination. We aimed to estimate the prevalence of influenza A viruses in wild birds (waterbirds and land birds; resident and migratory) in eastern Mexico, where the three main North American migration flyways converge and where there was no previous information on this subject. We detected influenza with reverse transcription coupled with a PCR approach. Of the 534 birds sampled between 2010 and 2012, we detected the influenza A virus in a high proportion of birds (39%). Prevalence was particularly high in land birds (49%) when compared to aquatic birds (26%); there was no difference in overall prevalence between resident (39%) and migratory birds (39%). The high prevalence of the avian influenza virus in land birds was noteworthy in the innermost sampling areas in northern Mexico (Coahuila [82%] and Nuevo Leon [43%]).
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Affiliation(s)
- Claudia Cerda-Armijo
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México.,Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, 66238 San Pedro Garza García, Nuevo León, México
| | - Irene Ruvalcaba-Ortega
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Juan Chablé-Santos
- Departamento de Zoología, Campus Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, 97100 Mérida, Yucatán, México
| | - Ricardo Canales-Del-Castillo
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México
| | - Lydia G Rivera-Morales
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Griselda Menchaca-Rodríguez
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México.,Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, 66238 San Pedro Garza García, Nuevo León, México
| | - Juan F Contreras-Cordero
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Antonio Guzmán-Velasco
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - José Ignacio González-Rojas
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México,
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A Review of Avian Influenza A Virus Associations in Synanthropic Birds. Viruses 2020; 12:v12111209. [PMID: 33114239 PMCID: PMC7690888 DOI: 10.3390/v12111209] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/20/2022] Open
Abstract
Avian influenza A viruses (IAV) have received significant attention due to the threat they pose to human, livestock, and wildlife health. In this review, we focus on what is known about IAV dynamics in less common avian species that may play a role in trafficking IAVs to poultry operations. Specifically, we focus on synanthropic bird species. Synanthropic species, otherwise known as peridomestic, are species that are ecologically associated with humans and anthropogenically modified landscapes, such as agricultural and urban areas. Aquatic birds such as waterfowl and shorebirds are the species most commonly associated with avian IAVs, and are generally considered the reservoir or maintenance hosts in the natural ecology of these viruses. Waterfowl and shorebirds are occasionally associated with poultry facilities, but are uncommon or absent in many areas, especially large commercial operations. In these cases, spillover hosts that share resources with both maintenance hosts and target hosts such as poultry may play an important role in introducing wild bird viruses onto farms. Consequently, our focus here is on what is known about IAV dynamics in synanthropic hosts that are commonly found on both farms and in nearby habitats, such as fields, lakes, wetlands, or riparian areas occupied by waterfowl or shorebirds.
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Medina JL, Lugo K, Vargas J, Morales N, Burgos A, Martínez EP, Ortega-Paredes D, Revelo M. Ecuadorian mainland industrial poultry production is free of H5/H7 Avian influenza virus: National surveillance program in 2016. J Vet Med Sci 2019; 81:1597-1600. [PMID: 31582645 PMCID: PMC6895618 DOI: 10.1292/jvms.19-0253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Avian influenza (AI) is a disease caused by influenza viruses type A that belong to the Orthomyxoviridae family. AI induces high economic losses in poultry production
worldwide. Due to a possible outbreak, a national surveillance program was needed. From April to July 2016, 152 industrial poultry farms were randomly sampled. All samples were analyzed by
competitive ELISA for Influenza type A viruses. Suspicious and positive sera were further analyzed by Hemagglutination Inhibition (HI) in order to serotype H5 or H7 low pathogenic avian
influenza virus (LPAIV). The farms sampled showed 94.08%, 3.95% and 1.97% of negative, positive and suspicious results, respectively. However, serotyping revealed all positive and suspicious
samples were negative to H5/H7 LPAIV. Our results show the absence of AI in the mainland Ecuadorian industrial poultry production.
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Affiliation(s)
- José Luis Medina
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
| | - Katherine Lugo
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
| | - Javier Vargas
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador.,Ecuador's Agriculture Quality Assurance Agency, AGROCALIDAD, Quito, 170516, Ecuador
| | - Nataly Morales
- Ecuador's Agriculture Quality Assurance Agency, AGROCALIDAD, Quito, 170516, Ecuador
| | - Ana Burgos
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
| | - Evelyn Pamela Martínez
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
| | - David Ortega-Paredes
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
| | - María Revelo
- Faculty of Veterinary Medicine and Animal Husbandry, Central University of Ecuador, Quito, 170521, Ecuador
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Glass K, Barnes B, Scott A, Toribio JA, Moloney B, Singh M, Hernandez-Jover M. Modelling the impact of biosecurity practices on the risk of high pathogenic avian influenza outbreaks in Australian commercial chicken farms. Prev Vet Med 2019; 165:8-14. [PMID: 30851932 DOI: 10.1016/j.prevetmed.2019.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 01/29/2023]
Abstract
As of 2018, Australia has experienced seven outbreaks of highly pathogenic avian influenza (HPAI) in poultry since 1976, all of which involved chickens. There is concern that increases in free-range farming could heighten HPAI outbreak risk due to the potential for greater contact between chickens and wild birds that are known to carry low pathogenic avian influenza (LPAI). We use mathematical models to assess the effect of a shift to free-range farming on the risk of HPAI outbreaks of H5 or H7 in the Australian commercial chicken industry, and the potential for intervention strategies to reduce this risk. We find that a shift of 25% of conventional indoor farms to free-range farming practices would result in a 6-7% increase in the risk of a HPAI outbreak. Current practices to treat water are highly effective, reducing the risk of outbreaks by 25-28% compared to no water treatment. Halving wild bird presence in feed storage areas could reduce risk by 16-19% while halving wild bird access of potential bridge-species to sheds could reduce outbreak risk by 23-25%, and relatively small improvements in biosecurity measures could entirely compensate for increased risks due to the increasing proportion of free-range farms in the industry. The short production cycle and cleaning practices for chicken meat sheds considerably reduce the risk that an introduced low pathogenic avian influenza virus is maintained in the flock until it is detected as HPAI through increased mortality of chickens. These findings help explain HPAI outbreak history in Australia and suggest practical changes in biosecurity practices that could reduce the risk of future outbreaks.
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Affiliation(s)
- K Glass
- Research School of Population Health, Australian National University, Australia.
| | - B Barnes
- Research School of Population Health, Australian National University, Australia
| | - A Scott
- Sydney School of Veterinary Science, University of Sydney, Australia
| | - J-A Toribio
- Sydney School of Veterinary Science, University of Sydney, Australia
| | - B Moloney
- New South Wales Department of Primary Industries, Australia
| | - M Singh
- Sydney School of Veterinary Science, University of Sydney, Australia
| | - M Hernandez-Jover
- School of Animal and Veterinary Sciences and Graham Centre for Agricultural Innovation, Charles Sturt University, Australia
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