370 BCE) in his text "On Airs, Waters, and Places".[2] He promoted the concept that public health depended on a clean environment.[3] In the mid-1800s, Rudolf Virchow, a physician, recognized the link between animal and human medicine, came up with the term zoonosis to describe a disease that can be passed from animals to humans, and actively advocated for veterinary medical education.[4] The founding of the Veterinary Public Health Division at the Centers for Disease Control and Prevention (CDC) in 1947 by James H. Steele, a veterinarian trained in public health, contributed to the understanding of how diseases are spread between animals and humans, or the epidemiology of zoonotic diseases.[4] Calvin Schwabe, another veterinarian trained in public health, coined the term One Medicine in a veterinary medical textbook in 1964, which reflects the similarities between animal and human medicine and stresses the importance of collaboration between veterinarians and physicians to help solve global health problems.[4] In 2004, The Wildlife Conservation Society held a conference at Rockefeller University in New York called One World, One Health, out of which the twelve Manhattan Principles were created.[5][6] These principles highlighted links between humans, animals, and the environment, how these links are integral to understanding disease dynamics, and the importance of interdisciplinary approaches to prevention, education, investment, and policy development.[6]