1. Department of Production Animal Studies Faculty of Veterinary Sciences University of Pretoria Pretoria South Africa
2. Directorate Animal Health Department of Agriculture, Forestry and Fisheries of the Republic of South Africa Pretoria South Africa
3. CIRAD UMR Animal, Santé, Territoires, Risque et Ecosystèmes (ASTRE) Montpellier France
4. ASTRE University of Montpellier, CIRAD, INRA Montpellier France
5. Onderstepoort Veterinary Research Agricultural Research Council Onderstepoort South Africa
6. TAD Scientific Pretoria South Africa
7. Department of Veterinary Tropical Diseases Faculty of Veterinary Sciences University of Pretoria Pretoria South Africa