1. International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya.
2. Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya.
3. International Livestock Research Institute (ILRI), Nairobi, Kenya.
4. Department of Tropical and Infectious Diseases, Institute of Primate Research, National Museums of Kenya, Nairobi, Kenya.