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Brucella: diagnosis, epidemiology, treatment
Research Guide
What is Brucella: diagnosis, epidemiology, treatment?
Brucella refers to a genus of bacteria causing brucellosis, a re-emerging zoonotic disease, with diagnosis relying on serological and culture techniques, epidemiology highlighting its global persistence especially in developing regions, and treatment involving prolonged antibiotic regimens.
Brucellosis remains a major zoonosis worldwide, with over 40,913 papers documenting its epidemiology, diagnosis, pathogenesis, and control. Pappas et al. (2006) produced 'The new global map of human brucellosis,' mapping its prevalence in endemic areas of the Mediterranean, Middle East, and Latin America. Corbel (1997) in 'Brucellosis: an Overview' notes that despite eradication of Brucella abortus from cattle in many countries, Brucella melitensis persists in sheep, goats, and even cattle in some regions.
Topic Hierarchy
Research Sub-Topics
Brucella Molecular Epidemiology
This sub-topic covers genomic sequencing, MLVA, and SNP analysis to trace Brucella strain transmission between animal reservoirs and humans. Researchers study phylodynamics and outbreak source attribution.
Brucella Diagnostic Test Evaluation
This sub-topic evaluates serological assays like ELISA, PCR, and culture methods for sensitivity, specificity, and field applicability in human and veterinary brucellosis. Researchers develop multiplex diagnostics and gold standards.
Brucella Vaccine Development
This sub-topic focuses on live-attenuated, subunit, and novel adjuvant vaccines like Rev-1 and RB51 for livestock and human protection. Researchers investigate immunogenicity, safety, and efficacy in challenge models.
Brucella Pathogenesis Mechanisms
This sub-topic examines intracellular survival strategies, type IV secretion systems, and host cell modulation by Brucella species. Researchers use omics approaches to identify virulence factors.
Brucella Host Immune Response
This sub-topic investigates cytokine profiles, T-cell responses, and innate immunity evasion during Brucella infection in humans and animals. Researchers model immune correlates of protection.
Why It Matters
Brucellosis imposes significant public health and economic burdens through chronic morbidity and agricultural losses. Pappas et al. (2005) in 'Brucellosis' report its presence for millennia, causing substantial loss of agricultural productivity in developing countries and emerging as a travel-related infection amid international tourism. Young (1995) in 'An Overview of Human Brucellosis' details clinical manifestations like undulant fever, affecting thousands annually, while Corbel (1997) in 'Brucellosis: an Overview' highlights failed eradication efforts despite Rev 1 vaccination campaigns, with B. melitensis causing infections in multiple livestock species. Franco et al. (2007) in 'Human brucellosis' emphasize underdiagnosis in endemic zones, leading to prolonged disability; for example, global incidence exceeds 500,000 cases yearly as mapped by Pappas et al. (2006), impacting pastoral communities in the Middle East and Africa.
Reading Guide
Where to Start
'Brucellosis: an Overview' by Corbel (1997) provides an accessible entry point with its concise summary of zoonotic transmission, clinical features, and control challenges for newcomers.
Key Papers Explained
Corbel (1997) in 'Brucellosis: an Overview' establishes foundational epidemiology and species roles, which Pappas et al. (2005) in 'Brucellosis' builds upon by detailing clinical morbidity and global travel risks. Pappas et al. (2006) in 'The new global map of human brucellosis' extends this with geospatial prevalence data, while Young (1995) in 'An Overview of Human Brucellosis' and Corbel (2006) in 'Brucellosis in humans and animals' connect human and veterinary aspects. Alton et al. (1988) in 'Techniques for the brucellosis laboratory' supplies diagnostic protocols underpinning these overviews.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Field lacks recent preprints, so frontiers center on refining Rev 1 vaccine limits noted by Corbel (1997) and genomic analysis for strain tracking from Pappas et al. (2006). Focus persists on intracellular pathogenesis unresolved in top papers.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Sequences of proteins of immunological interest | 1984 | Analytical Biochemistry | 3.4K | ✕ |
| 2 | A SIMPLE INDEX OF CROHN'S-DISEASE ACTIVITY | 1980 | The Lancet | 2.9K | ✕ |
| 3 | The new global map of human brucellosis | 2006 | The Lancet Infectious ... | 2.2K | ✕ |
| 4 | Brucellosis: an Overview | 1997 | Emerging infectious di... | 1.3K | ✓ |
| 5 | Brucellosis | 2005 | New England Journal of... | 1.2K | ✕ |
| 6 | Techniques for the brucellosis laboratory | 1988 | HAL (Le Centre pour la... | 1.2K | ✕ |
| 7 | Manson's Tropical Diseases. | 1973 | Annals of Internal Med... | 998 | ✕ |
| 8 | Human brucellosis | 2007 | The Lancet Infectious ... | 974 | ✕ |
| 9 | Brucellosis in humans and animals. | 2006 | — | 866 | ✕ |
| 10 | An Overview of Human Brucellosis | 1995 | Clinical Infectious Di... | 855 | ✕ |
Frequently Asked Questions
What are the primary diagnostic techniques for brucellosis?
Alton et al. (1988) in 'Techniques for the brucellosis laboratory' outline standardized serological tests like the Rose Bengal plate test and complement fixation, alongside blood culture isolation of Brucella species. These methods detect antibodies or viable bacteria, essential for confirming infection in humans and animals. Culture remains the gold standard despite biosafety challenges.
How is brucellosis transmitted epidemiologically?
Brucellosis spreads zoonotically via consumption of unpasteurized dairy or direct contact with infected animals, as detailed by Pappas et al. (2006) in 'The new global map of human brucellosis,' identifying high-risk regions like the Mediterranean basin. Pappas et al. (2005) in 'Brucellosis' note occupational exposure among herders and veterinarians. Global persistence occurs despite control in developed nations.
What is the standard treatment for human brucellosis?
Treatment requires combination antibiotics like doxycycline plus rifampin for 6 weeks, as recommended in overviews by Young (1995) in 'An Overview of Human Brucellosis' and Corbel (1997) in 'Brucellosis: an Overview.' Relapse rates necessitate prolonged therapy to eradicate intracellular bacteria. Corbel (2006) in 'Brucellosis in humans and animals' stresses regimen adherence for cure.
Why has brucellosis evaded eradication?
Pappas et al. (2005) in 'Brucellosis' explain its millennia-long persistence due to intracellular survival and wildlife reservoirs. Corbel (1997) notes emergence of B. melitensis in cattle despite B. abortus control. Vaccination limitations, like Rev 1 strain issues, hinder progress.
What is the global burden of human brucellosis?
Pappas et al. (2006) in 'The new global map of human brucellosis' charts endemicity in developing regions, with underreporting inflating true incidence. Franco et al. (2007) in 'Human brucellosis' highlight diagnostic gaps causing chronic cases. It affects public health via morbidity and economic losses in agriculture.
Open Research Questions
- ? How can molecular diagnostics improve early brucellosis detection beyond serological methods?
- ? What host-pathogen interactions enable Brucella intracellular replication and immune evasion?
- ? Which vaccine strategies can achieve safe, effective brucellosis control in livestock and humans?
- ? Why do relapse rates remain high despite standard antibiotic treatments?
- ? How do wildlife reservoirs sustain brucellosis epidemiology in eradicated regions?
Recent Trends
With 40,913 works and no 5-year growth data specified, the field shows sustained output without acceleration.
No preprints or news in the last 12 months indicate stable rather than surging activity, consistent with persistent challenges in endemic areas from Pappas et al.
2006Core papers like Corbel remain highly cited, reflecting reliance on established knowledge.
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