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Chapot L, Hibbard R, Ariyanto KB, Maulana KY, Yusuf H, Febriyani W, Cameron A, Paul M, Faverjon C, Vergne T. A qualitative analysis of health information-sharing networks in the Indonesian poultry sector. Prev Vet Med 2023; 219:106003. [PMID: 37657198 DOI: 10.1016/j.prevetmed.2023.106003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 07/21/2023] [Accepted: 08/14/2023] [Indexed: 09/03/2023]
Abstract
Animal production systems are developing into increasingly complex value chains involving a large diversity of actors with multiple and dynamic linkages, concurrently creating many opportunities for disease spread. Access to timely and good-quality animal health information is vital for designing effective disease management strategies. However, several factors may hamper information flows along those chains. Understanding the structure and dynamics of information networks is essential to develop effective and acceptable health information systems. We applied a qualitative network approach to understand how information about poultry health is generated, disseminated and used for decision-making along the poultry value chain in Indonesia. Maps of the value chain and information networks were generated based on data from key informant interviews to illustrate the linkages and information-sharing patterns between stakeholders. Four types of farm business models were identified: company-owned, contract, partnership and independent. Although companies and most independent farmers collected health and production data routinely, their systems were strongly siloed and still relied on a mix of digital and paper-based methods, which impaired their analytical capacity. Technical service providers from the upstream sector and industry associations were identified as key intermediaries in the information-sharing network with the ability to create informal bridges between separate business networks and public actors. These actors can play a strategic role in the development of integrated information systems to improve stakeholders' capacity to monitor, anticipate and manage disease threats at all levels of the value chain. This study contributes to fill an important knowledge gap regarding the layer sector and may help decision-makers to design effective policies and interventions tailored to the type of business model.
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Affiliation(s)
- L Chapot
- Ausvet, Ausvet Europe, 3 Rue Camille Jordan, 69001 Lyon, France; IHAP, Université de Toulouse, INRAE, ENVT, 23 Chemin des Capelles, 31300 Toulouse, France.
| | - R Hibbard
- Ausvet, Ausvet Europe, 3 Rue Camille Jordan, 69001 Lyon, France; IHAP, Université de Toulouse, INRAE, ENVT, 23 Chemin des Capelles, 31300 Toulouse, France
| | - K B Ariyanto
- Ausvet, Ausvet representative office Indonesia, Arkadia Green Park, Tower G Lv. 8, 12520 DKI Jakarta, Indonesia
| | - K Y Maulana
- Ausvet, Ausvet representative office Indonesia, Arkadia Green Park, Tower G Lv. 8, 12520 DKI Jakarta, Indonesia
| | - H Yusuf
- Ausvet, Ausvet representative office Indonesia, Arkadia Green Park, Tower G Lv. 8, 12520 DKI Jakarta, Indonesia
| | - W Febriyani
- Ausvet, Ausvet representative office Indonesia, Arkadia Green Park, Tower G Lv. 8, 12520 DKI Jakarta, Indonesia
| | - A Cameron
- Ausvet, Ausvet Europe, 3 Rue Camille Jordan, 69001 Lyon, France
| | - M Paul
- IHAP, Université de Toulouse, INRAE, ENVT, 23 Chemin des Capelles, 31300 Toulouse, France
| | - C Faverjon
- Ausvet, Ausvet Europe, 3 Rue Camille Jordan, 69001 Lyon, France
| | - T Vergne
- IHAP, Université de Toulouse, INRAE, ENVT, 23 Chemin des Capelles, 31300 Toulouse, France
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Gaide N, Crispo M, Jbenyeni A, Croville G, Vergne T, Bleuart C, Delverdier M, Guérin J. Validation of Rnascope® IN-SITU Hybridization and Comparison with Immunohistochemistry for the Detection of Avian Influenza. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bauzile B, Sicard G, Guinat C, Andraud M, Rose N, Hammami P, Durand B, Paul MC, Vergne T. Unravelling direct and indirect contact patterns between duck farms in France and their association with the 2016-2017 epidemic of Highly Pathogenic Avian Influenza (H5N8). Prev Vet Med 2021; 198:105548. [PMID: 34920326 DOI: 10.1016/j.prevetmed.2021.105548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 11/10/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022]
Abstract
Live animal movements generate direct contacts (via the exchange of live animals) and indirect contacts (via the transit of transport vehicles) between farms, which can contribute to the spread of pathogens. However, most analyses focus solely on direct contacts and can therefore underestimate the contribution of live animal movements in the spread of infectious diseases. Here, we used French live duck movement data (2016-2018) from one of the largest transport companies to compare direct and indirect contact patterns between duck farms and evaluate how these patterns were associated with the French 2016-2017 epidemic of highly pathogenic avian influenza H5N8. A total number of 614 farms were included in the study, and two directed networks were generated: the animal introduction network (exchange of live ducks) and the transit network (transit of transport vehicles). Following descriptive analyses, these two networks were scrutinized in relation to farm infection status during the epidemic. Results showed that farms were substantially more connected in the transit network than in the animal introduction network and that the transit of transport vehicles generated more opportunities for transmission than the exchange of live animals. We also showed that animal introduction and transit networks' statistics decreased substantially during the epidemic (January-March 2017) compared to non-epidemic periods (January-March 2016 and January-March 2018). We estimated a probability of 33.3 % that a farm exposed to the infection through either of the two live duck movement networks (i.e. that was in direct or indirect contact with a farm that was reported as infected in the following seven days) becomes infected within seven days after the contact. However, we also demonstrated that the level of exposure of farms by these two contact patterns was low, leading only to a handful of transmission events through these routes. As a consequence, we showed that live animal movement patterns are efficient transmission routes for HPAI but have been efficiently reduced to limit the spread during the French 2020-2021 epidemic. These results underpin the relevance of studying indirect contacts resulting from the movement of animals to understand their transmission potential and the importance of accounting for both routes when designing disease control strategies.
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Affiliation(s)
- B Bauzile
- IHAP, ENVT, INRAE, Université de Toulouse, Toulouse, France.
| | - G Sicard
- IHAP, ENVT, INRAE, Université de Toulouse, Toulouse, France
| | - C Guinat
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel, Switzerland; Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - M Andraud
- ANSES, EPISABE Unit, Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - N Rose
- ANSES, EPISABE Unit, Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - P Hammami
- ANSES, EPISABE Unit, Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - B Durand
- Epidemiology Unit, Laboratory for Animal Health, ANSES, University Paris Est, Maisons-Alfort, France
| | - M C Paul
- IHAP, ENVT, INRAE, Université de Toulouse, Toulouse, France
| | - T Vergne
- IHAP, ENVT, INRAE, Université de Toulouse, Toulouse, France
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Gougeon S, Hernandez E, Chevrot N, Vergne T, Cherel M, Prestat-Marquis E, Valin E. 152 Evaluation of the SkinCam, a Connected Portable Camera Device, for the Analysis of Skin Microrelief. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Meyer A, Zamir L, Ben Yair Gilboa A, Gelman B, Pfeiffer DU, Vergne T. Quantitative Assessment of the Risk of Release of Foot-and-Mouth Disease Virus via Export of Bull Semen from Israel. Risk Anal 2017; 37:2350-2359. [PMID: 28334452 DOI: 10.1111/risa.12799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 06/06/2023]
Abstract
Various foot-and-mouth disease (FMD) virus strains circulate in the Middle East, causing frequent episodes of FMD outbreaks among Israeli livestock. Since the virus is highly resistant in semen, artificial insemination with contaminated bull semen may lead to the infection of the receiver cow. As a non-FMD-free country with vaccination, Israel is currently engaged in trading bull semen only with countries of the same status. The purpose of this study was to assess the risk of release of FMD virus through export of bull semen in order to estimate the risk for FMD-free countries considering purchasing Israeli bull semen. A stochastic risk assessment model was used to estimate this risk, defined as the annual likelihood of exporting at least one ejaculate of bull semen contaminated with viable FMD virus. A total of 45 scenarios were assessed to account for uncertainty and variability around specific parameter estimates and to evaluate the effect of various mitigation measures, such as performing a preexport test on semen ejaculates. Under the most plausible scenario, the annual likelihood of exporting bull semen contaminated with FMD virus had a median of 1.3 * 10-7 for an export of 100 ejaculates per year. This corresponds to one infected ejaculate exported every 7 million years. Under the worst-case scenario, the median of the risk rose to 7.9 * 10-5 , which is equivalent to the export of one infected ejaculate every 12,000 years. Sensitivity analysis indicated that the most influential parameter is the probability of viral excretion in infected bulls.
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Affiliation(s)
- A Meyer
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
| | - L Zamir
- Israel Veterinary Services, Beit-Dagan, Israel
| | | | - B Gelman
- Kimron Laboratory Institute, Israel Veterinary Services, Beit-Dagan, Israel
| | - D U Pfeiffer
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
- School of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR
| | - T Vergne
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
- MIVEGEC Group (UMR CNRS/IRD/UM2), Montpellier, France
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Meyer A, Dinh TX, Han TA, Do DV, Nhu TV, Pham LT, Nguyen TTT, Newman S, Häsler B, Pfeiffer DU, Vergne T. Trade patterns facilitating highly pathogenic avian influenza virus dissemination in the free-grazing layer duck system in Vietnam. Transbound Emerg Dis 2017; 65:408-419. [PMID: 28815990 DOI: 10.1111/tbed.12697] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Indexed: 11/29/2022]
Abstract
Highly pathogenic avian influenza (HPAI) viruses continue to threaten smallholder poultry producers in several South-east Asian countries, including Vietnam. In particular, the free-grazing duck system has been repeatedly highlighted as a major risk factor for HPAI outbreaks. Free-grazing ducks, which scavenge on rice paddies after the harvest, account for a large proportion of the duck population in Vietnam and the wider South-east Asian region. However, the structure and dynamics of the free-grazing duck production from farm to consumption has not been described for Vietnam. In this study, we used a value chain approach to provide a complete picture of the actors involved in the production and marketing of free-grazing duck eggs and spent layer ducks, as well as to investigate the governance structure of this food system. Group interviews and key informant interviews were conducted in two provinces located in the Mekong River Delta (MRD) and the Red River Delta (RRD). The results presented here highlight similarities and differences in farming and trade practices between the two provinces. The trade of spent layer ducks involved large volumes of live ducks being sent to China and Cambodia for consumption, generating a substantial risk of transboundary spread of pathogens, including HPAI viruses. We describe the major role of "duck yards", which act as hubs in the northbound trade of spent layer ducks. These yards should be considered as essential links in the value chain of spent layer ducks when considering HPAI surveillance and control. The veterinary authorities are only marginally involved in the value chain activities, and their influence could be strengthened by increasing surveillance activities for instance in duck yards. Last, we discuss the dynamics of the duck value chain and further implications for future HPAI management policies.
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Affiliation(s)
- A Meyer
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
| | - T X Dinh
- National Institute for Animal Sciences, Hanoi, Vietnam
| | - T A Han
- National Institute for Animal Sciences, Hanoi, Vietnam
| | - D V Do
- National Institute for Animal Sciences, Hanoi, Vietnam
| | - T V Nhu
- National Institute for Animal Sciences, Hanoi, Vietnam
| | - L T Pham
- Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Vietnam
| | - T T T Nguyen
- Emergency Centre for Transboundary Animal Diseases, Food and Agriculture Organization of the United Nations, Hanoi, Vietnam
| | - S Newman
- Emergency Centre for Transboundary Animal Diseases, Food and Agriculture Organization of the United Nations, Hanoi, Vietnam
| | - B Häsler
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
| | - D U Pfeiffer
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK.,School of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - T Vergne
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK.,MIVEGEC Group (UMR CNRS/IRD/UM2), Montpellier, France
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Guinat C, Vergne T, Jurado-Diaz C, Sánchez-Vizcaíno JM, Dixon L, Pfeiffer DU. Effectiveness and practicality of control strategies for African swine fever: what do we really know? Vet Rec 2017; 180:97. [PMID: 27852963 PMCID: PMC5293861 DOI: 10.1136/vr.103992] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2016] [Indexed: 12/05/2022]
Abstract
African swine fever (ASF) is a major pig health problem, and the causative virus is moving closer to Western European regions where pig density is high. Stopping or slowing down the spread of ASF requires mitigation strategies that are both effective and practical. Based on the elicitation of ASF expert opinion, this study identified surveillance and intervention strategies for ASF that are perceived as the most effective by providing the best combination between effectiveness and practicality. Among the 20 surveillance strategies that were identified, passive surveillance of wild boar and syndromic surveillance of pig mortality were considered to be the most effective surveillance strategies for controlling ASF virus spread. Among the 22 intervention strategies that were identified, culling of all infected herds and movement bans for neighbouring herds were regarded as the most effective intervention strategies. Active surveillance and carcase removal in wild boar populations were rated as the most effective surveillance and intervention strategies, but were also considered to be the least practical, suggesting that more research is needed to develop more effective methods for controlling ASF in wild boar populations.
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Affiliation(s)
- C Guinat
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, UK
| | - T Vergne
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, UK
| | - C Jurado-Diaz
- VISAVET Center and Animal Health Department, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | - J M Sánchez-Vizcaíno
- VISAVET Center and Animal Health Department, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | - L Dixon
- The Pirbright Institute, Ash Road, Pirbright, Surrey, GU24 0NF, UK
| | - D U Pfeiffer
- Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, UK
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Korennoy FI, Gulenkin VM, Gogin AE, Vergne T, Karaulov AK. Estimating the Basic Reproductive Number for African Swine Fever Using the Ukrainian Historical Epidemic of 1977. Transbound Emerg Dis 2016; 64:1858-1866. [PMID: 27667658 DOI: 10.1111/tbed.12583] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Indexed: 11/30/2022]
Abstract
In 1977, Ukraine experienced a local epidemic of African swine fever (ASF) in the Odessa region. A total of 20 settlements were affected during the course of the epidemic, including both large farms and backyard households. Thanks to timely interventions, the virus circulation was successfully eradicated within 6 months, leading to no additional outbreaks. Detailed report of the outbreak's investigation has been publically available from 2014. The report contains some quantitative data that allow studying the ASF-spread dynamics in the course of the epidemic. In our study, we used this historical epidemic to estimate the basic reproductive number of the ASF virus both within and between farms. The basic reproductive number (R0 ) represents the average number of secondary infections caused by one infectious unit during its infectious period in a susceptible population. Calculations were made under assumption of an exponential initial growth by fitting the approximating curve to the initial segments of the epidemic curves. The R0 both within farm and between farms was estimated at 7.46 (95% confidence interval: 5.68-9.21) and 1.65 (1.42-1.88), respectively. Corresponding daily transmission rates were estimated at 1.07 (0.81-1.32) and 0.09 (0.07-0.10). These estimations based on historical data are consistent with those using data generated by the recent epidemic currently affecting eastern Europe. Such results contribute to the published knowledge on the ASF transmission dynamics under natural conditions and could be used to model and predict the spread of ASF in affected and non-affected regions and to evaluate the effectiveness of different control measures.
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Affiliation(s)
- F I Korennoy
- Federal Center for Animal Health (FGBI ARRIAH), Vladimir, Russia
| | - V M Gulenkin
- Federal Center for Animal Health (FGBI ARRIAH), Vladimir, Russia
| | - A E Gogin
- National Research Institute for Veterinary Virology and Microbiology of Russia (SSINRRIVV&M), Pokrov, Russia
| | - T Vergne
- Royal Veterinary College, University of London, London, UK
| | - A K Karaulov
- Federal Center for Animal Health (FGBI ARRIAH), Vladimir, Russia
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Bronner A, Morignat E, Fournié G, Vergne T, Vinard JL, Gay E, Calavas D. Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings. Sci Rep 2015; 5:18285. [PMID: 26687099 PMCID: PMC4685302 DOI: 10.1038/srep18285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 11/06/2015] [Indexed: 11/30/2022] Open
Abstract
Our objective was to study the ability of a syndromic surveillance system to identify spatio-temporal clusters of drops in the number of calvings among beef cows during the Bluetongue epizootic of 2007 and 2008, based on calving seasons. France was partitioned into 300 iso-populated units, i.e. units with quite the same number of beef cattle. Only 1% of clusters were unlikely to be related to Bluetongue. Clusters were detected during the calving season of primary infection by Bluetongue in 28% (n = 23) of the units first infected in 2007, and in 87% (n = 184) of the units first infected in 2008. In units in which a first cluster was detected over their calving season of primary infection, Bluetongue was detected more rapidly after the start of the calving season and its prevalence was higher than in other units. We believe that this type of syndromic surveillance system could improve the surveillance of abortive events in French cattle. Besides, our approach should be used to develop syndromic surveillance systems for other diseases and purposes, and in other settings, to avoid "false" alarms due to isolated events and homogenize the ability to detect abnormal variations of indicator amongst iso-populated units.
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Affiliation(s)
- A. Bronner
- ANSES-Lyon, Epidemiology Unit, Lyon, France
| | | | - G. Fournié
- Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - T. Vergne
- Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - J-L Vinard
- ANSES-Lyon, Epidemiology Unit, Lyon, France
| | - E. Gay
- ANSES-Lyon, Epidemiology Unit, Lyon, France
| | - D. Calavas
- ANSES-Lyon, Epidemiology Unit, Lyon, France
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Vergne T, Gogin A, Pfeiffer DU. Statistical Exploration of Local Transmission Routes for African Swine Fever in Pigs in the Russian Federation, 2007-2014. Transbound Emerg Dis 2015; 64:504-512. [PMID: 26192820 DOI: 10.1111/tbed.12391] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Indexed: 11/26/2022]
Abstract
African swine fever (ASF) is a devastating viral disease of swine that is present in both pigs and wild boar in the western part of the Russian Federation and the eastern part of the European Union. It represents a significant threat for the European pig production industry as neither treatment nor vaccine is available. This study analysed the spatial and spatio-temporal distributions of ASF cases that were reported in domestic pigs and wild boar for assessing the likelihood of wild boar-to-domestic pig and farm-to-farm transmission routes in the epidemic that occurred from 2007 to 2014 in the Krasnodar and the Tver regions, two of the most affected areas of the Russian Federation. Results suggest that in both regions, the spatial proximity to an infectious farm was a strong risk factor for infection of a susceptible farm. In the Krasnodar region, the results of the statistical analysis suggest that the epidemics in wild boar and in domestic pigs were independent from each other. In contrast, there seemed to be a dependence between the two epidemics in the Tver region. But because outbreaks in domestic pigs were not statistically significantly clustered around wild boar cases, the joint spatial distribution of wild boar cases and of outbreaks in domestic pigs in the Tver region may be explained by regular spillovers from the domestic pig to the wild boar population. These findings confirm the need to maintain high biosecurity standards on pig farms and justify strict control measures targeted at domestic pig production such as culling of infected herds and local movement restrictions.
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Affiliation(s)
- T Vergne
- Veterinary Epidemiology Economics and Public Health Group, Royal Veterinary College, University of London, London, UK
| | - A Gogin
- National Research Institute for Veterinary Virology and Microbiology of the Russian Academy of Agricultural Science, Pokrov, Russia
| | - D U Pfeiffer
- Veterinary Epidemiology Economics and Public Health Group, Royal Veterinary College, University of London, London, UK
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Vergne T, Guinat C, Petkova P, Gogin A, Kolbasov D, Blome S, Molia S, Pinto Ferreira J, Wieland B, Nathues H, Pfeiffer DU. Attitudes and Beliefs of Pig Farmers and Wild Boar Hunters Towards Reporting of African Swine Fever in Bulgaria, Germany and the Western Part of the Russian Federation. Transbound Emerg Dis 2014; 63:e194-204. [DOI: 10.1111/tbed.12254] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Indexed: 11/26/2022]
Affiliation(s)
- T. Vergne
- Veterinary Epidemiology; Economics and Public Health Group; Royal Veterinary College; London UK
| | - C. Guinat
- Veterinary Epidemiology; Economics and Public Health Group; Royal Veterinary College; London UK
- Pirbright Institute; Pirbright UK
| | - P. Petkova
- Bulgarian Food Safety Agency; Sofia Bulgaria
| | - A. Gogin
- State Research Institution National Research Institute for Veterinary Virology and Microbiology of Russia; Pokrov the Russian Federation
| | - D. Kolbasov
- State Research Institution National Research Institute for Veterinary Virology and Microbiology of Russia; Pokrov the Russian Federation
| | - S. Blome
- Friedrich-Loeffler-Institut; Greifswald - Insel Riems; Germany
| | - S. Molia
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement; Montpellier France
| | | | - B. Wieland
- Veterinary Epidemiology; Economics and Public Health Group; Royal Veterinary College; London UK
| | - H. Nathues
- Veterinary Epidemiology; Economics and Public Health Group; Royal Veterinary College; London UK
- Clinic for Swine; Vetsuisse Faculty; University of Berne; Berne Switzerland
| | - D. U. Pfeiffer
- Veterinary Epidemiology; Economics and Public Health Group; Royal Veterinary College; London UK
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Bellet C, Vergne T, Grosbois V, Holl D, Roger F, Goutard F. Evaluating the efficiency of participatory epidemiology to estimate the incidence and impacts of foot-and-mouth disease among livestock owners in Cambodia. Acta Trop 2012; 123:31-8. [PMID: 22487753 DOI: 10.1016/j.actatropica.2012.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 03/23/2012] [Accepted: 03/24/2012] [Indexed: 11/17/2022]
Abstract
The economic and social impacts of foot-and-mouth disease (FMD) for livestock owners of developed countries have been extensively documented over the past few years. In developing countries such as Cambodia, this evaluation is often lacking due to the scarcity of accurate data. In the present study, we used a range of participatory tools to infer farmers' knowledge and perception, and the relative incidence of FMD from January 2009 to June 2010 in fifty-one villages of Svay Rieng province, Cambodia. In addition, the detection of non-structural protein at village level was used to cross-validate the results from the participatory epidemiology (PE) study. A quantitative assessment using Bayesian modeling was carried out to assess the ability of PE to retrospectively determine the FMD-infected status of a village in Cambodia. Our study shows that even if FMD is ranked second in the list of priority diseases, livestock owners did not see any benefit in reporting it since the disease entailed low direct losses. The average clinical incidence rates at individual level for cattle-buffaloes and pigs in infected villages were assessed by proportional piling at 18% and 11%, respectively for the year 2009. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of PE study were estimated at 87%, 30%, 51% and 74%, respectively. This approach seems to largely overestimate the presence of the disease but proves useful in evaluating the impact of FMD at household level and in understanding the reasons for not reporting it. This information may be important in establishing well-adapted disease prevention and control strategies in Cambodia.
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Affiliation(s)
- C Bellet
- CIRAD, Département ES, Unité AGIRs (UR22), Campus international de Baillarguet, Montpellier Cedex, France. camille
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