Félicitations à Thi Thanh Hoa Pham!!!

Hoa a brillamment soutenu ses travaux de thèse le 27 juin 2016 à l'Université de Kasetsart en Thaïlande.

Notre collègue Marie-Isabelle Peyre/Cirad UR AGIRs basée au Vietnam, a encadré cette thèse au Vietnam.

Titre de ses travaux

"Development of novel methodogies for the socioeconomic evaluation of animal health surveillance system: Application to swine disease surveillance in Vietnam".


Introduction: Early detection of animal diseases through efficient surveillance system is critical to prevent the emergence and re-emergence of new pathogens from animals. In developing countries, especially in Vietnam, the understanding of individual and local community choices regarding animal disease prevention and control is the key factor in efficiency and sustainability of the prevention system at both local and national levels. The objective of this work was to develop a novel methodology for economic evaluation of swine influenza surveillance in Vietnam integrating surveillance system organisation and performances but also functional and socio-economic factors affecting the performances of the system

Material and Methods: Participatory epidemiology (PE) and social network analysis (SNA) were combined to provide information on the critical points of the system organisation to be improved. This information was then used in a discrete choice experiment (DCE) to assess the preference of stakeholders on different swine disease surveillance and control alternatives. The cost-benefit of the different scenarios was then compared to the current situation in terms of disease control using a SIR model.

Results: Swine disease priority and indicators used for swine disease ranking varied between local (disease economic impact on farmers’ livelihood) and national level (trading and public health impacts). This ranking influenced farmers’ decision on swine disease reporting and control. Private sector (drug sellers, drug/feed companies) played the most important role in animal health information sharing. Loss of reputation and uncertainty of being compensated for culling influenced large farmer and smallholders’ decision to report swine diseases. Culling of breeding stock, delivery time of compensation, sick pig trading and movement ban were also identified as barriers to disease report. Destroying of dead and unrecovered pigs with compensation of 70% of pig market value (scenario 2) was the most effective strategy in terms of acceptability, timelines, and
sensitivity. However its total cost was 1.5 times higher than scenario 3 (destroying of dead and unrecovered pigs with compensation of 50% of pig market value). Scenario 3 had the highest benefit-cost ratio.

Conclusion: This thesis presented a novel methodology for comprehensive evaluation of the swine disease surveillance system in Vietnam. This comprehensive evaluation not only provided evidence of the most effective and efficient approach but also evidence on the potential of success and appropriation of a new surveillance design by the farmers. Such data are essential for supporting policy maker to improve the performance and sustainability of the swine disease surveillance system in Vietnam. This study was limited in the Red River Delta provinces, North Vietnam, further studies should be performed to increase the representativeness of the study and the applicability of these tools in other regions of Vietnam.

Publiée : 02/07/2016

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