We just had our goats CAE tested and the Vet asked if we wanted to be tested for Johnes disease too. We said "Heck yeah! What is it?"
The Vet thinks this is going to be the next big scare when BSE winds down. Apparently it can lay dormant for several years and can be transferred in milk and fecal material. He says it is being linked to Crohns disease in people. If I understood right, to be certified Johnes Disease free, you have to test negative for several years in a row.
http://www.mycattle.com/health/focus...ource=overture
Steve