University of Liverpool, affiliation not provided to SSRN, Murdoch University, University of Liverpool, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool - Global Burden Of Animal Diseases Programme (GBADS), affiliation not provided to SSRN, International Livestock Research Institute (ILRI), University of Gondar, affiliation not provided to SSRN, Department of Livestock Services (DLS), Department of Livestock Services (DLS), affiliation not provided to SSRN and University of Liverpool - Global Burden Of Animal Diseases Programme (GBADS)