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




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Tuesday, April 24, 2018
Mycobacterial Implications in Crohn’s and Chronic Inflammatory Diseases

The Human Para Foundation has announced its 2018 Conference: Mycobacterial Implications in Crohn’s and Chronic Inflammatory Diseases. On September 21 & 22, 2018, a group of dedicated researchers will bring their experience and expertise to Berkeley, California for a two-day conference. Featuring presenters and experts from across the globe, this conference has been specifically designed to explore the role that mycobacteria, particularly Mycobacterium avium spp. paratuberculosis (MAP), may play in Crohn’s disease, Type 1 diabetes, multiple sclerosis and other chronic conditions.

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Thursday, April 12, 2018
14th International Colloquium on Paratuberculosis


Reminder:June 4-8, 2018, Mexico will host the 14th Colloquium of the International Association for Paratuberculosis (14-ICP) in the Riviera Maya, Quintana Roo.

This 14-ICP will assemble once again a group of researchers from throughout the world. It will be the 35th anniversary of the first meeting on paratuberculosis held in Ames, Iowa, and the 28th anniversary of the founding of the International Association for Paratuberculosis.

Cancun-Riviera Maya is one of the most dynamic cultural capitals, rich in history and alive with excitement and friendliness people, where visitors each year come from all parts of the world, making this a wonderful showcase for all that Mexico has to offer.

May 4, 2018 is the hotel reservation deadline. Please visit the meeting website to register for the conference and hotel.

14-ICP website


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Thursday, April 5, 2018
Johne's disease more common in beef cattle than realized

The attached report provides rates of MAP infection in beef cattle based on submissions to the Johne’s Testing Center in 2017. Clients submit samples for a variety of reasons: to test clinical suspects, perform pre-purchase testing, or in attempt to achieve herd classification in the voluntary USDA program based on certainty of MAP infection freedom. A list of samples tested at the JTC was generated from the lab’s accession program and sorted by state. Samples tested by direct real-time PCR for IS900 on fecal samples were used to determine infection rates as they indicate the animal is currently shedding the organism. Fecal samples were either tested individually or pooled by animal age into groups of up to five animals.

In 2017, 18.1% (105/578) beef cattle tested were PCR-positive, this includes all pools and individuals. Of the 941 fecal samples grouped into 195 pools, 49 (25.1%) were PCR-positive. Individuals comprising 27 pools were tested identifying 27 PCR-positive animals. The other pools were not tested individually, per client decision. Certain states accounted for a larger portion of samples received and positive results. For example, Missouri, Montana, Nebraska, and Texas accounted for 63% (63/100) of PCR-positive samples.

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