1. Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
2. ASRT, Inc. , Atlanta, Georgia , USA
3. California Emerging Infections Program , Oakland, California , USA
4. Colorado Department of Public Health and Environment , Denver, Colorado , USA
5. Connecticut Emerging Infections Program, Yale School of Public Health , New Haven, Connecticut , USA
6. Emory University School of Medicine , Atlanta, Georgia , USA
7. Atlanta VA Medical Center , Atlanta, Georgia , USA
8. Georgia Emerging Infections Program , Atlanta, Georgia , USA
9. Foundation for Atlanta Veterans Education and Research , Atlanta, Georgia , USA
10. Department of International Health, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland , USA
11. Minnesota Department of Health , St. Paul, Minnesota , USA
12. New Mexico Emerging Infections Program , Albuquerque, New Mexico , USA
13. University of New Mexico , Albuquerque, New Mexico , USA
14. University of Rochester School of Medicine , Rochester, New York , USA
15. Public Health Division, Oregon Health Authority , Portland, Oregon , USA
16. Vanderbilt University Medical Center , Nashville, Tennessee , USA