Fig. 6From: Epidemiological and economic consequences of purchasing livestock infected with Mycobacterium avium subsp. paratuberculosis Purchase of animals with random risk of infection: the development of prevalence in a herd initially free from MAP importing animals with (a) random risk or purchasing animals with (b) high risk. The farmer can purchase 1, 5 or 10 per year. Solid lines show the median prevalence and dotted lines show the upper and lower 90% simulation envelopeBack to article page