1. School of Life Sciences, The Nelson Mandela African Institution of Science and Technology, Tengeru, Arusha, Tanzania;
2. Tanzania Veterinary Laboratory Agency, Temeke, Dar es Salaam, Tanzania;
3. School of Pharmacy, University of the Western Cape, Bellville, South Africa;
4. School of Life Sciences, University of the Western Cape, Bellville, South Africa;
5. Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Kikuyu, Nairobi, Kenya