Many refer to Dr. Rudolf Virchow (1821-1902), a physician, as the “father” of comparative medicine, cellular biology, and veterinary pathology.  Virchow coined the term “zoonosis”.  He said “between animal and human medicine there are no dividing lines—nor should there be.  The object is different but the experience obtained constitutes the basis of all medicine”. Emerging Infectious Diseases (EID) - Volume 14, Number 9–September 2008 Please see the attached historical paper about “One Medicine” (now commonly referred to as One Health) ground breaking and visionary physician Rudolf Virchow: written by Myron G. Schultz, DVM, MD.   Dr. Schultz is Senior Medical Officer, Global Disease Detection Operations Center, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, GA 30333 (USA).