Zoonosis: Brucellosis in Animals and Humans: Difference between revisions

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Brucellosis is among the most common and highly contagious zoonotic infections. Zoonotic diseases are those which can be transmitted from animals to humans. In the case of brucellosis, mammals – domestic, wild, terrestrial, and marine – are capable of transmitting the disease. It is caused by several species of bacteria in the genus <i>Brucella</i>, the most common of which are <i>B. melitensis</i>, <i>B. suis</i>, and <i>B. abortus</i>, which are typically transmitted from ruminants, swine, and cattle, respectively. <i>Brucella</i> spp. are miniscule (≈ 0.5µm-1.5µm in diameter), sessile, Gram-negative coccobacilli, and are facultative intracellular parasites.
Brucellosis is among the most common and highly contagious zoonotic infections. Zoonotic diseases are those which can be transmitted from animals to humans. In the case of brucellosis, mammals – domestic, wild, terrestrial, and marine – are capable of transmitting the disease. It is caused by several species of bacteria in the genus <i>Brucella</i>, the most common of which are <i>B. melitensis</i>, <i>B. suis</i>, and <i>B. abortus</i>, which are typically transmitted from ruminants, swine, and cattle, respectively. <i>Brucella</i> spp. are miniscule (≈ 0.5µm-1.5µm in diameter), sessile, Gram-negative coccobacilli, and are facultative intracellular parasites.
<br> [[Image:bdist.png|thumb|300px|right|Figure 1. Global occurrences of Brucellosis in humans. The highest incidences are recorded in Syria (1603.4 incidences per 1M people per year), Mongolia (605.9 incidences per 1M people per year), and Kyrgyzstan (362.2 incidences per 1M people per year). The incidence of Brucellosis in the United States is 0.4 per 1M people per year. http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.0040317#pmed-0040317-g001]]


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Revision as of 13:36, 16 April 2017

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Introduction

Colored scanning electron micrograph of B. melitensis. http://bioinfo.bisr.res.in/project/dofpath/images/bacteria/Brucella%20melitensis.jpg.


By Hannah Wedig

Brucellosis is among the most common and highly contagious zoonotic infections. Zoonotic diseases are those which can be transmitted from animals to humans. In the case of brucellosis, mammals – domestic, wild, terrestrial, and marine – are capable of transmitting the disease. It is caused by several species of bacteria in the genus Brucella, the most common of which are B. melitensis, B. suis, and B. abortus, which are typically transmitted from ruminants, swine, and cattle, respectively. Brucella spp. are miniscule (≈ 0.5µm-1.5µm in diameter), sessile, Gram-negative coccobacilli, and are facultative intracellular parasites.


Figure 1. Global occurrences of Brucellosis in humans. The highest incidences are recorded in Syria (1603.4 incidences per 1M people per year), Mongolia (605.9 incidences per 1M people per year), and Kyrgyzstan (362.2 incidences per 1M people per year). The incidence of Brucellosis in the United States is 0.4 per 1M people per year. http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.0040317#pmed-0040317-g001


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Legend/credit: Electron micrograph of the Ebola Zaire virus. This was the first photo ever taken of the virus, on 10/13/1976. By Dr. F.A. Murphy, now at U.C. Davis, then at the CDC.
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References

  1. ↑ Hodgkin, J. and Partridge, F.A. "Caenorhabditis elegans meets microsporidia: the nematode killers from Paris." 2008. PLoS Biology 6:2634-2637.
  2. ↑ Bartlett et al.: Oncolytic viruses as therapeutic cancer vaccines. Molecular Cancer 2013 12:103.



Authored for BIOL 238 Microbiology, taught by Joan Slonczewski, 2017, Kenyon College.

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