Ovine Johne's Disease (OJD)

​Ovine Johne's Disease (OJD) is a chronic, incurable bacterial disease of sheep. Infected sheep gradually lose weight and die. Since it was first found in Australia in 1980, OJD has proven to be a costly disease. It spreads slowly, is difficult to detect early on, causes production losses and can kill about 10% of adult sheep each year if left unmanaged.