1 From the Indian Health Service, US Department of Health and Human Services, Northern Navajo Medical Center (P.H.G.), Shiprock, NM, and Office of Public Health Support (M.L.B.), Rockville, MD; National Center for Emerging and Zoonotic Infectious Diseases (J.M.M.), Centers for Disease Control and Prevention, Atlanta, GA; and the University of New Mexico Health Sciences Center (J.E.C., A.S.R.), Albuquerque. paul.gordon@ihs.gov.
2 From the Indian Health Service, US Department of Health and Human Services, Northern Navajo Medical Center (P.H.G.), Shiprock, NM, and Office of Public Health Support (M.L.B.), Rockville, MD; National Center for Emerging and Zoonotic Infectious Diseases (J.M.M.), Centers for Disease Control and Prevention, Atlanta, GA; and the University of New Mexico Health Sciences Center (J.E.C., A.S.R.), Albuquerque.