1. Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
2. College of Arts and Sciences, Cornell University, Ithaca, NY, USA
3. Kenya Medical Research Institute (KEMRI), Center for Microbiology Research, Nairobi, Kenya
4. Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
5. Department of Anthropology, Northwestern University, Evanston, IL, USA