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JOHNE'S INFORMATION CENTER - University of Wisconsin Ñ School of Veterinary Medicine


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Before 1910
1910 - 1930
1930 - 1950
1950 - 1970
1970 - 1990
1990 - Present

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Centers of paratuberculosis research emerge around the world. This leads to a need for better communication among scientists and birth of the International Association for Paratuberculosis.

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As the pace of veterinary research and discovery accelerated in the 1970s and 1980s, knowledge and understanding about many facets of M. paratuberculosis and Johne's disease became more complete. It is impossible to single out any one individual or scientific achievement that was of primary importance. Instead, progress was made by a global research effort that advanced the field of paratuberculosis research.

Some of the many individuals making
substantial contributions to this effort were:

  • F. Saxegaard – Norway
  • J.B. Jørgensen – Denmark
  • A. Lepper – Australia
  • M. Thorel – France
  • N.J.L. Gilmour – Scotland
  • R. Juste – Spain
  • D. Collins and G. de Lisle – New Zealand
  • J. Goudswaard and
    G. Benedictus – The Netherlands
  • B. Kormendy – Hungary
  • Y. Yokomizo – Japan
  • C. Buergelt, R. Chiodini,
    M.T. Collins, A.B. Larsen, R.Merkal,
    and D. Whipple – USA

Birth of the International Association for Paratuberculosis and other Intestinal Mycobacterioses
Dr. Richard Merkal (1928-1992), working at the National Animal Disease Center, Ames, Iowa, USA, saw a need to foster closer collaboration and international communication for individuals addressing the increasingly numerous aspects of Johne's disease. He organized the First International Colloquium on Paratuberculosis held in Ames in the summer of 1983. A second International Colloquium was organized by Richard Merkal and Marie Thorel and held at the Veterinary School in Maisons-Alfort, France in 1988. At that meeting, Rod Chiodini and Richard Merkal decided to form the International Association for Paratuberculosis and other Intestinal Mycobacterioses. The first Paratuberculosis Newsletter was published on January 1, 1989. Four more international colloquiums followed. The third, organized by Claus Buergeldt and Rod Chiodini was held in Orlando, Florida in 1991, and the fourth, organized by John Hermon-Taylor and Mike Collins, was held in Cambridge, England in 1994. The Fifth International Colloquium on Paratuberculosis, organized by Mike Collins and Rod Chiodini, was held in Madison, Wisconsin, September 29- October 4,1996. The Sixth International Colloquium on Paratuberculosis, organized by Robin Condron, was held February14-18, 1999 in Melbourne, Australia. The Seventh International Colloquium on Paratuberculosis is being organized by Ramon Juste and will be held June 12-14, 2002 in Bilbao, Spain. The proceedings of these international colloquia provide a concise summary of the latest developments in the field of paratuberculosis and can be obtained from the Association via its website: