1. University of Nairobi, Faculty of Veterinary Medicine, Department of Veterinary Pathology, Microbiology and Parasitology, P.O. Box 29053, Kangemi, 00625 Nairobi, Kenya
2. Animal Health and Industry Training Institute (AHITI) Kabete, P.O. Box 29040, Kangemi, 00625 Nairobi, Kenya
3. Department of Animal Science, Chuka University, P.O. Box 109, 00625 Chuka, Kenya
4. University of Nairobi, Faculty of Veterinary Medicine, Department of Public Health, Pharmacology and Toxicology, P.O. Box 29053, Kangemi, 00625 Nairobi, Kenya
5. University of Nairobi, Faculty of Health Sciences, Center for Epidemiological Modelling and Analysis, Kenyatta National Hospital Nairobi, P.O. Box 19676, 00202 Nairobi, Kenya