Brucella: Difference between revisions

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==Causes==
==Causes==
*'''''[[Brucella]]''''' is a genus of Gram-negative bacteria.<ref name="Sherris">{{cite book | author = Ryan KJ, Ray CG (editors) | title = Sherris Medical Microbiology | edition = 4th ed. | publisher = McGraw Hill | year = 2004 | isbn = 0-8385-8529-9 }}</ref>They are small (0.5 to 0.7 by 0.6 to 1.5 µm), non-motile, encapsulated coccobacilli.  
*'''''[[Brucella]]''''' is a genus of [[gram-negative bacteria]].<ref name="Sherris">{{cite book | author = Ryan KJ, Ray CG (editors) | title = Sherris Medical Microbiology | edition = 4th ed. | publisher = McGraw Hill | year = 2004 | isbn = 0-8385-8529-9 }}</ref>They are small (0.5 to 0.7 by 0.6 to 1.5 µm), non-motile and encapsulated [[coccobacilli]].  


=== Brucella species ===
=== Brucella species ===
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{{reflist|2}}
{{reflist|2}}


[[Category:Rhizobiales]]
[[Category:Disease]]
[[Category:Gram negative bacteria]]
[[Category:Up-To-Date]]
[[Category:Infectious Disease Project]]
[[Category:Pulmonology]]
[[Category:Hepatology]]
[[Category:Rheumatology]]
[[Category:Nephrology]]

Latest revision as of 20:44, 29 July 2020

Brucellosis Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Differentiating Brucellosis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Principles of diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

X-Ray

CT Scan

MRI

Other Diagnostic Studies

Treatment

Medical Therapy

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Brucella On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Brucella

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Brucella

CDC on Brucella

Brucella in the news

Blogs on Brucella

Directions to Hospitals Treating Brucellosis

Risk calculators and risk factors for Brucella

Brucella

Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Alpha Proteobacteria
Order: Rhizobiales
Family: Brucellaceae
Genus: Brucella
Species

B. abortus
B. canis
B. melitensis
B. neotomae
B. ovis
B. suis

This page is about microbiologic aspects of the organism(s).  For clinical aspects of the disease, see brucellosis.

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Danitza Lukac, Vishal Devarkonda, M.B.B.S[2]

Overview

Human brucellosis is caused by four Brucellae species: B. abortus, B. canis, B. melitensis, and B. suis.[1]

Causes

Brucella species

Brucella species have been found primarily in mammals. [3] Brucellla species, with their host and degree of virulence is described below:[4]

Species Host Human Virulence
B. melitensis Goats, sheep, cattle, buffaloes, dogs and camels ++++
B. abortus Cattle, buffaloes, bison, dogs, elk, and horses ++/+++
B. canis Dogs +
B. suis Pigs and sheep +
B. ovis Sheep -

Tests to differentiate brucella species

Following tests may be used to differentiate between the different species of brucella.[5]

Test B. melitensis B. abortus B. suis B. ovis B. canis
Need to CO2 - + - + -
Production of H2S - + + - -
Growth on basic fushin 0.002% + + - + -
Growth on thionin 0.004% - - + + +
Growth on thionin 0.002% + - + + +
Destroy with Tb phage - + - - -

References

  1. "WHO" (PDF).
  2. Ryan KJ, Ray CG (editors) (2004). Sherris Medical Microbiology (4th ed. ed.). McGraw Hill. ISBN 0-8385-8529-9.
  3. Pappas G, Akritidis N, Bosilkovski M, Tsianos E (2005). "Brucellosis". N Engl J Med. 352 (22): 2325–36. doi:10.1056/NEJMra050570. PMID 15930423.
  4. "WHO" (PDF).
  5. "WHO" (PDF).