1. Department of Biosecurity, Ecosystems and Veterinary Public Health, Makerere University College of Veterinary Medicine, Animal Resources and Biosecurity, Kampala, Uganda;
2. Department of Environmental Management, Makerere University College of Agricultural and Environmental Sciences, Kampala, Uganda;
3. Department of Pathology, Makerere University College of Health Sciences, Kampala, Uganda;
4. Health Economics Unit, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa