1. Centers for Disease Control and Prevention, Atlanta, Georgia (R.H., F.S.D., A.O., C.C., C.R., S.G.)
2. Centers for Disease Control and Prevention, Atlanta, Georgia, and General Dynamics Information Technology, Falls Church, Virginia (D.U.)
3. California Emerging Infections Program, Oakland, California (P.D.K.)
4. Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut (K.Y.)
5. Emerging Infections Program, Georgia Department of Health, and Veterans Affairs Medical Center, Atlanta, Georgia, and Foundation for Atlanta Veterans Education and Research, Decatur, Georgia (E.F.)
6. Maryland Department of Health, Baltimore, Maryland (M.L.M.)
7. Michigan Department of Health and Human Services, Lansing, Michigan (S.K.)
8. Minnesota Department of Health, St. Paul, Minnesota (R.L.)
9. New Mexico Department of Health, Santa Fe, New Mexico (C.M.)
10. New York State Department of Health, Albany, New York (A.M.)
11. University of Rochester School of Medicine and Dentistry, Rochester, New York (N.M.B.)
12. Ohio Department of Health, Columbus, Ohio (L.M.B.)
13. Oregon Health Authority, Portland, Oregon (M.S., A.T.)
14. Vanderbilt University School of Medicine, Nashville, Tennessee (H.K.T., W.S.)
15. Salt Lake County Health Department, Salt Lake City, Utah (I.R.).