Symptoms of brucellosis may show up anytime from a few days to a few months after you've been infected. Signs and symptoms are similar to those of the flu and include: 
Fever
Chills
Loss of appetite
Sweats
Weakness
Fatigue
Joint, muscle and back pain
Headache
 Brucellosis symptoms may disappear for weeks or months and then return. Some people have chronic brucellosis and experience symptoms for years, even after treatment. Long-term signs and symptoms may include: 
Fatigue
Recurrent fevers
Inflammation of the inner lining of the heart chambers (endocarditis)
Joint inflammation (arthritis)
Arthritis of the spinal bones (spondylitis)
Arthritis of joints where the spine and pelvis connect (sacroiliitis)
