Governor Doug Ducey named Don Herrington to succeed Dr. Cara Christ at the Arizona Department of Health. The Governor and Herrington together named Dr. Richard Carmona, the 17-th Surgeon General of the United States, to serve as the senior advisor on public health emergency preparedness and lead a statewide effort to boost vaccine and public health awareness. Dr. Cara Christ has taken another job ast the Chief Medical Officer for Blue Cross Blue Shield of Arizona.