If Brucella abortus was not isolated from the glands of my animal why is my herd not opened?
• There have been cases where the organism was not isolated from animals that gave positive readings to the blood test. This does not mean that these animals did not have Brucellosis. Each herd breakdown is looked at on an individual basis, and a decision as to when to derestrict a herd is made after taking several factors into account, for example the number of reactors, how high the readings were, whether the reactors were cows or maiden heifers, how long the reactors were in the herd and the number of breakdowns in the area.
