Critical to the implementation of the United State's Johne's disease control program is education and certification of regulatory and local veterinarians. A basic national curriculum was determined, but states conducted their own training. Many states had additional policies and procedures for disease control which also had to be taught. The result was a variety of training programs, ranging from 2 hours to 3 days. It became evident the US needed a program that would provide a uniform base of knowledge and deliver a consistent message about diagnosis and control. It also needed to be administered locally and allow for state-specific practices, policies, and procedures. Web-based education could do this as well as provide verification of proficiency and records for the veterinarian and the state and educate unlimited numbers of veterinarians at their convenience.With Johne's experts across the country, we developed the certificate program in a modular format with four basic information modules and two modules with national programmatic information for a total of six hours of continuing education. The last two modules could be customized for each state, if needed. States could then decide if and how they wanted to use the online certification program, using all six generic modules or customizing them for their own state. Administratively, we adapted a learning portal that facilitates administration and access by states and their veterinarians. Ultimately, we've created a successful online program that, so far, 19 states, and the US Department of Agriculture, have adopted. Since it's inauguration in February 2004, the Online Johne's Disease Veterinary Certificate Program, has trained over 450 veterinarians with over 2700 credit hours of continuing education. We are intrigued with the idea of expanding the program to other countries. Development of virtual farm visits, a required refresher course, and virtual seminars are currently in progress.