1. Centre for Infectious Disease Research in Zambia Lusaka Zambia
2. Department of Biomedical Sciences, School of Health Sciences University of Zambia Lusaka Zambia
3. Department of Postgraduate Studies and Research, School of Medicine Lusaka Apex Medical University Lusaka Zambia
4. Department of Internal Medicine, School of Medicine University of Zambia Lusaka Zambia
5. Department of Disease Control, School of Veterinary Medicine University of Zambia Lusaka Zambia
6. Department of Global Health Boston University School of Public Health Boston Massachusetts USA