The disease causes
a 50% decrease in calf production, thereby decreasing the fertility
indexes. Infected animals experience a decrease of 20 to 25% in milk
production and of 15% in meat production.
Brucellosis affects
all animal species. In humans it is considered an occupational disease
that affects mostly veterinarians, farmers, and slaughterhouse workers
. In humans, brucellosis causes intermittent fever, weakness, weight
loss, epididymitis and orchitis, abdominal pain and arthritis.