1. Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland.
2. Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya.
3. Kenya Medical Research Institute, Kisumu, Kenya.
4. Department of Veterinary Tropical Diseases, University of Pretoria, Onderstepoort, South Africa.
5. College of Medicine, Veterinary Medicine and Life Sciences, University of Glasgow, Glasgow, United Kingdom.
6. Institute of Integrative Biology, School of Biological Sciences, Univeristy of Liverpool, Liverpool, United Kingdom.
7. Evolutionary Ecology Group, University of Antwerp, Antwerpen, Belgium.
8. US Centers for Disease Control and Prevention, Nairobi, Kenya.
9. WHO Collaborative Center for Rickettsial and Other Arthropod-borne Bacterial Infections, UMR 7278CNRS IRD, IFR 48, Aix Marseille University, Marseille, France.
10. Uniformed Services University of the Health Sciences, Bethesda, Maryland.