1. Animal and Plant Health Inspection Service, USDA, Code of federal regulations, title 9, part 113.209. Rabies vaccine, killed virus, US Government Printing Office, Washington, DC, 2004.
2. Rabies surveillance in the United States during 2005
3. Rabies surveillance in the United States during 2006
4. Importation of Dogs and Cats to Rabies-Free Areas of the World
5. Center for Information Management, American Veterinary Medical Association, U.S. pet ownership and demographics sourcebook, American Veterinary Medical Association, Schaumburg, IL, USA, 1993.