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Heath behavior change is an important task for caregivers. Motivational Interviewing (MI) is an effective evidence-based approach to overcoming the ambivalence that keeps many people from desired changes in their lives. In a warm and empathic atmosphere and in a basic trust in the patient self efficacy for achieving the change, MI is a patient-centered approach to enhance patient motivation to commit them in the change decision. Among critical conditions of change, MI practicing emphasizes on expressing empathy, supporting self-efficacy, rolling with resistance and developing discrepancy. Regular practicing with helping and non judgmental teachers is a necessary condition of a fruitful learning.

We analysed 595 cows in 20 herds for serological evidence of paratuberculosis with an ELISA procedure for which we had recently determined a sensitivity of 50% and a specificity of 98%, and we obtained an overall calculated real prevalence of 5.99%. In two herds with clinical cases of paratuberculosis, the calculated true prevalence of seroreactors was 21.47%. In 9 herds with clinical suspicion of Johne's disease, the rate was 4.23%, 9 herds without any clinical suspicion showed a mean prevalence of 0%. Whereas the trend was clear for groups of herds, the observed prevalence in individual herds varied from 0% to 17.9%, without obvious association with manifest clinical problems of paratuberculosis.

A sensitivity of 50% and a specificity of 98% were obtained in the evaluation of a serological method (commercial absorbed ELISA, Commonwealth Serum Laboratories, Parkville, Australia) for the diagnosis of paratuberculosis. The population used in the study consisted of 20 infected, suspect and non-infected herds from the region of the Plateau de Diesse. Another evaluated non-absorbed ELISA test had a sensitivity of 30% and a specificity of 91%.