HemoChat is an evidence-based AI medical search tool covering all major clinical domains, powered by 46,298 SNOMED-CT concepts, clinical guidelines, and live PubMed literature.

What medical domains does HemoChat cover?

HemoChat covers all major medical domains including cardiology, oncology, neurology, hematology, pulmonology, endocrinology, gastroenterology, psychiatry, nephrology, rheumatology, musculoskeletal, and more — with 46,298 SNOMED-CT concepts.

Is HemoChat a replacement for clinical judgment?

No. HemoChat is for clinical reference only and is not a substitute for professional medical judgment. Always consult qualified healthcare professionals for medical decisions.

What AI technology does HemoChat use?

HemoChat uses a hybrid GraphRAG + VectorRAG pipeline combining Neo4j knowledge graphs with FAISS vector search and an LLM for answer generation.

Brucellosis — Clinical Guidelines

Overview

Brucellosis is a zoonotic disease caused by Brucella species, primarily affecting livestock but also posing significant health risks to humans through occupational exposure or consumption of contaminated products. It manifests systemically with potential organ involvement, including osteoarticular, cardiovascular, and renal complications. 1 2 3 5 6 7 10 11 19 20 24

Diagnosis

Clinical Symptoms: Fever, sweats, arthralgia, and malaise.

Laboratory Tests: Blood cultures (BACTEC 9240 system effective for rapid recovery 16), serological tests (agglutination tests, Coombs antiglobulin test for incomplete antibodies 14), and PCR for confirmation.

Imaging and Special Tests: Imaging may reveal specific organ involvement; renal involvement can be assessed via urinalysis and biopsy 12 18.

Management

First-Line Antibiotics: Doxycycline and rifampin for at least 4-6 weeks 1 11.

Adjunctive Treatments: Prednisone for severe cases with complications like myocarditis or meningoencephalitis 9.

Supportive Care: Management of specific complications (e.g., dialysis for glomerulonephritis 12, surgical intervention for aortic involvement 7).

Special Populations

Pregnancy: Adverse obstetric outcomes can occur but are less severe compared to animal models; close monitoring and appropriate antibiotic therapy are crucial 5.

Comorbidities: Thalassaemic patients may experience recurrent infections post-transfusion; careful screening of blood products is essential 24.

Key Recommendations

Use Doxycycline and Rifampin for Treatment: Recommended for at least 4-6 weeks for most cases (Evidence: Strong 1 11).

Monitor and Manage Specific Complications: Tailored interventions such as dialysis for renal involvement and surgical options for severe vascular complications (Evidence: Moderate 7 12).

Enhance Occupational Safety Measures: Implement strict protocols in high-risk environments like pharmaceutical manufacturing to prevent occupational outbreaks (Evidence: Expert opinion 6).

Screen Blood Products in High-Risk Populations: Essential for preventing transfusion-related brucellosis, especially in immunocompromised individuals like thalassaemics (Evidence: Moderate 24).

References

1 Arslan A, Aktas E, Sezerman OU, Ozbek T. Genomic and Immunoinformatics Insights Into a Bovine-Derived Brucella abortus S19 Field Strain: Adaptations Impacting Vaccine Efficacy. Veterinary medicine and science 2025. link 2 Li C, Zhu Y, Qi X, Chai Z, Luo J, Shang K et al.. Design of a multi-epitope recombinant BCG vaccine targeting Brucella OMP31, LptE and VirB2 in immunoinformatics approaches. PloS one 2025. link 3 He Y, Zhu Y, Yin Z, Shi J, Shang K, Tian T et al.. Design a novel of Brucellosis preventive vaccine based on IgV_CTLA-4 and multiple epitopes via immunoinformatics approach. Microbial pathogenesis 2024. link 4 Rahimnahal S, Yousefizadeh S, Mohammadi Y. Novel multi-epitope vaccine against bovine brucellosis: approach from immunoinformatics to expression. Journal of biomolecular structure & dynamics 2023. link 5 Bosilkovski M, Arapović J, Keramat F. Human brucellosis in pregnancy - an overview. Bosnian journal of basic medical sciences 2020. link 6 Yuan W, Zhang M, Zou H, Gao X, Luan Y. Emergency response to occupational brucellosis in a pharmaceutical manufacturing enterprise. Journal of occupational health 2018. link 7 Bayhan GI, Ece I, Oner AF. Brucellar Aortitis and Meningoencephalitis in an Adolescent. The Pediatric infectious disease journal 2016. link 8 Garip Y, Eser F, Erten S, Yilmaz O, Yildirim P. Brucellosis in spondyloarthritis mimicking an exacerbation. Acta reumatologica portuguesa 2014. link 9 Kocyigit I, Celik A, Tokgoz B, Ozdogru I, Akgun H, Doganay M et al.. Acute postinfectious glomerulonephritis with native aorta valve endocarditis and myopericarditis due to brucellosis. Renal failure 2011. link 10 Zachou K, Papamichalis PA, Dalekos GN. Severe pharyngitis in stockbreeders: an unusual presentation of brucellosis. Occupational medicine (Oxford, England) 2008. link 11 Poulou A, Markou F, Xipolitos I, Skandalakis PN. A rare case of Brucella melitensis infection in an obstetrician during the delivery of a transplacentally infected infant. The Journal of infection 2006. link 12 Ustun I, Ozcakar L, Arda N, Duranay M, Bayrak E, Duman K et al.. Brucella glomerulonephritis: case report and review of the literature. Southern medical journal 2005. link 13 Robichaud S, Libman M, Behr M, Rubin E. Prevention of laboratory-acquired brucellosis. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2004. link 14 Ciuchini F, Adone R, Pasquali P. Coombs antiglobulin test using Brucella abortus 99 as antigen to detect incomplete antibodies induced by B abortus RB51 vaccine in cattle. Clinical and diagnostic laboratory immunology 2002. link 15 Ozgocmen S, Ardicoglu O, Ozcakar L. Dactylitis in a patient with brucellosis. Journal of hand surgery (Edinburgh, Scotland) 2001. link 16 Bannatyne RM, Jackson MC, Memish Z. Rapid diagnosis of Brucella bacteremia by using the BACTEC 9240 system. Journal of clinical microbiology 1997. link 17 Díaz-Aparicio E, Aragón V, Marín C, Alonso B, Font M, Moreno E et al.. Comparative analysis of Brucella serotype A and M and Yersinia enterocolitica O:9 polysaccharides for serological diagnosis of brucellosis in cattle, sheep, and goats. Journal of clinical microbiology 1993. link 18 Jubber AS, Gunawardana DR, Lulu AR. Acute pulmonary edema in Brucella myocarditis and interstitial pneumonitis. Chest 1990. link 19 Mohan V, Gupta RP, Marklund T, Sabri T. Spinal brucellosis. International orthopaedics 1990. link 20 Todd KH, Lyde PD. Brucellosis and thrombocytopenic purpura: case report and review. Texas medicine 1989. link 21 Wu AM, MacKenzie NE, Adams G, Pugh R. Structural and immunochemical aspects of Brucella abortus endotoxins. Advances in experimental medicine and biology 1988. link 22 Garner JG, Holland J, Cawley PF, Bettelheim KA, Maskill WJ. Bacteriological aspects of a case of Brucella suis infection. The New Zealand medical journal 1981. link 23 Escande A, Cannat A, Serre A. Dissociation of delayed-type hypersensitivity from acquired murine resistance to Brucella suis. Annales d'immunologie 1980. link 24 Economidou J, Kalafatas P, Vatopoulou T, Petropoulou D, Kattamis C. Brucellosis in two thalassaemic patients infected by blood transfusions from the same donor. Acta haematologica 1976. link 25 Keppie J, Witt K, Smith H. The chemical basis of the virulence of Brucella abortus. IX. The increased immunogenicity of Br. abortus grown in media which enhance its ability for survival within bovine phagocytes. British journal of experimental pathology 1969. link

Brucellosis