1. World Animal Health Information and Analysis Department; World Organisation for Animal Health; Paris France
2. UMR EPIA; INRA VetAgro Sup; Marcy l'Etoile France
3. Animal Disease Research Unit; USDA-Agricultural Research Service; Pullman Washington
4. UMR ASTRE CIRAD INRA; CIRAD; Monferrier-sur-Lez France