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University of Wisconsin–Madison
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The Wisconsin Idea in Action

Development of a Cost-Effective Control Program for Johne's Disease

UW-Madison Professor Michael Collins has invented a more accurate blood test for Johne's disease. Johne's disease is a costly and incurable bacterial infection of the intestine that affects roughly 80 percent of Wisconsin dairy herds. The causative agent, Mycobacterium paratuberculosis, is also found in the intestines of people with Crohn's disease and uncreative colitis, and some medical research suggests there may be a link. Professor Collins proved in field trials that a cost-effective Johne's disease control program works in diverse dairy herds.


Professor Collins produced free online education materials for animal agriculturists and the general public at, in addition to creating a seven-credit online certificate program for veterinarians in Johne's disease at The certificate program aims to upgrade their knowledge and qualify them to do herd risk assessments.

Focus Areas

Project Leader

Michael Collins

Pathobiological Sciences
School or College
School of Veterinary Medicine

This project was last updated on Aug 19, 2014. Do you have an update for this project? Find out how to contribute.