When a woman has brucellosis, what does it mean?

It depends. Brucellosis is a disease that chiefly affects livestock (cattle and goats), and can be transferred to humans if precautions are not taken (goggles, rubber gloves). If a woman is pregnant, the main treatment (tetracyclines) should be avoided since they can damage growing teeth and bones. Children also should avoid this treatment for the same reason.
Bacterial infection. Brucellosis is a bacterial infection, common in domesticated animals and is some times acquired through contact with animals or animal products. It causes a febrile illness with bone pains, enlargement of liver spleen and general debility. Some types of brucella organisms cause abortions in animals. The illness can be treated with antibiotics.