to compare virus circulation in the field and at critical points of the commodity chains (studies performed in parallel) using an approach mixing both classical value chain analysis methodologies and HACCP methods;

to model virus spread risk along the commodity chains using data collected by classical value chain analysis, risk factor identification and risk analysis;

to study the re-organisation of the poultry commodity chains under a sanitary crisis: to assess structural changes within the supply chains, their determinants, the winners/losers, and their impacts on risks;

These results would be further combined at a later stage with a disease diffusion model in order to provide recommendations and tools to improve disease surveillance and control.