Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/4/2025

Brucellosis Diagnosis and Treatment

Clinical Manifestations

  • Fever with temperature swings is a hallmark symptom, often accompanied by profuse sweating, especially at night 1
  • Headaches are frequently reported and can be severe 1

Complications

  • Neurobrucellosis - can cause meningitis and other neurological complications 1
  • Endocarditis - a rare but potentially fatal complication with high mortality 4

Treatment

  • The Centers for Disease Control and Prevention recommends a six-week regimen of doxycycline combined with either streptomycin or rifampicin for effective treatment 1, 2
  • Doxycycline 100 mg twice daily orally for 6 weeks 2
  • Streptomycin 15 mg/kg daily intramuscularly for 2-3 weeks 2
  • Rifampicin 600-900 mg daily as a single morning dose for 6 weeks 2
  • For brucellar spondylitis, aminoglycoside-containing regimens may be superior to rifampicin-containing ones, and treatment duration may need to be extended beyond the standard 6 weeks 4, 2
  • Brucellar endocarditis requires aggressive management with empirical antimicrobials and often surgical intervention 4, 2
  • For brucellosis in pregnancy, TMP-SMX alone or in combination with rifampicin is recommended 4

Prevention

  • Regular symptom monitoring and serologic testing for 24 weeks after exposure is recommended for high-risk individuals 1
  • Avoid consumption of unpasteurized dairy products 3
  • Use appropriate personal protective equipment when handling potentially infected animals 3
  • Follow proper laboratory safety protocols when handling Brucella specimens 3