1. Centers for Disease Control and Prevention, Atlanta, Georgia (E.J.C., M.A.R., A.O., C.R., S.G.)
2. Emory University School of Medicine and Atlanta Veterans Affairs Medical Center, Atlanta, Georgia (E.J.A.)
3. University of Rochester School of Medicine and Dentistry, Rochester, New York (N.M.B.)
4. Ohio Department of Health, Columbus, Ohio (L.B.)
5. Center for Preparedness and Response, Atlanta, Georgia (S.C.)
6. New York State Department of Health, Albany, New York (E.D.)
7. Colorado Department of Public Health and Environment, Denver, Colorado (R.H.)
8. Michigan Department of Health and Human Services, Lansing, Michigan (S.K.)
9. Minnesota Department of Health, St. Paul, Minnesota (R.L.)
10. New Mexico Department of Health, Santa Fe, New Mexico (C.M.)
11. Maryland Department of Health, Baltimore, Maryland (M.L.M.)
12. Vanderbilt University School of Medicine, Nashville, Tennessee (W.S., H.K.T.)
13. Salt Lake County Health Department, Salt Lake City, Utah (M.S.)
14. Oregon Public Health Division, Portland, Oregon (A.T.)
15. Yale School of Public Health, New Haven, Connecticut (K.Y.)