1. Gusii Institute of Technology, Kisii, Kenya.
2. Kenya Medical Research Institute, Nairobi, Kenya.
3. Department of Viral Infection and International Health, Kanazawa University, Kanazawa, Japan.
4. Centers for Disease Control, Global AIDS Program, Nairobi, Kenya.
5. Kenyatta University, Nairobi, Kenya.
6. Jomo Kenyatta University of Agriculture and Technology, Juja, Kenya.
7. Department of Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada.