1. Division of Vector-Borne Infectious Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Public Health Service, Department of Health and Human Services, Fort Collins, Colorado.
2. Epidemiology Program Office, Division of Applied Public Health Training, Centers for Disease Control and Prevention, U.S. Public Health Service, Department of Health and Human Services, Atlanta, Georgia.
3. Department of Defense.
4. Division of Disease Control, Bureau of Health, Maine Department of Human Services, Augusta, Maine.
5. Maine Health & Environmental Testing Laboratory, Maine Department of Heath and Human Services, Augusta, Maine.
6. Southern Maine Medical Center, Biddeford, Maine.
7. Maine General Medical Center, Augusta, Maine.
8. Mercy Hospital, Portland, Maine.
9. Maine General Medical Center, Waterville, Maine.
10. Vector-Borne Disease Laboratory, Maine Medical Center Research Institute, South Portland, Maine.
11. Division of Health Surveillance, Vermont Department of Health, Burlington, Vermont.
12. Veterans Affairs Medical Center, White River Junction, Vermont.
13. Communicable Disease Division, Bureau of Epidemiology, Michigan Department of Community Health, Lansing, Michigan.
14. Wisconsin Division of Public Health, Madison, Wisconsin.
15. Division of Foodborne, Bacterial, and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta Georgia.
16. Wadsworth Center, New York State Department of Health, Albany, New York.
17. Department of Pathology, University of New Mexico School of Medicine, Albuquerque, New Mexico.
18. Global Disease Detection and Response Program, U.S. Naval Medical Research Unit, Cairo, Egypt.