Price transmission during food safety incidents: The case of Spanish tuna fraud
2023
Jin, Yan | Gil Roig, José María | Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia | Universitat Politècnica de Catalunya. CREDA-UPC-IRTA - Centre de Recerca en Economia i Desenvolupament Agroalimentari UPC-IRTA
Using a two-regime threshold vector autoregressive model, this study investigates the nonlinear price transmission among tuna, salmon and hake during a food safety incident. The tuna fraud in Spain caused a histamine outbreak in 2017, which made 105 people fall ill. To evaluate the degree to which the food safety incident affected price transmission and reflected consumer awareness of the tuna fraud scandal, we have developed a communication index based on the number of Twitter posts and use its first difference to identify the increasing and decreasing regime of the development of the incident
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