Saturday, July 13, 2013

What is Brucellosis?

Brucellosis is an infectious disease that originates in animals and further attacks human beings. It is so named because the causative agent is a bacterium of the kind Brucella. It is usually seen to affect domestic animals like dogs, goats, cattle and pigs. The disease is omnipresent and generally widespread in developing nations. In the 19th century, it was called Malta fever or Mediterranean fever. From the 20th century, it was referred to as undulant fever. The reason was that the fever falls and rises over some weeks in untreated patients.

Brucellosis in Cattle
Cattle fall prey to this disease due to the bacteria Brucella abortus. Presence of these bacteria can lead to abortions, arthritis of joints or weak progeny. Abortions occur due to two reasons - infections in the placenta and fetus or absence of anti-Brucella activity in the amniotic fluid. In males, this bacteria is found in the reproductive system. The Brucella milk ring test is carried out to separate the infected animals. Those which are infected are usually killed. Veterinary doctors should vaccinate the young cattle to bring the situation under control.

Brucellosis in Dogs
Brucella canis is the bacteria that is found in dogs. It propagates due to breeding and contact with aborted fetuses. Generally, the genitals and lymphatic system is affected. However, the kidney, eye and intervertebral disc may also suffer. In females, abortion takes place. In males, the testicles and scrotum are inflamed. Both contract fever. Blood testing before the breeding season begins is done to minimize spread of this disease.

Spread of the Disease
  • consumption of untreated or contaminated milk and its derived products
  • direct contact with infected goats, sheep, bison, cattle, camels, pigs and dogs. The bacteria can penetrate through normal human skin
  • direct contact with carcasses of above animals
  • childbirth rests
Symptoms
Similar to other feverish diseases, the symptoms are:
  • fluctuating fever
  • sweating with an odor similar to wet hay
  • muscular and body pain
  • headache and anorexia
  • weakness and depression
These may last for some weeks or years. In the first stage, septicaemia, migratory arthralgia and myalgia occur. Blood tests reveal anemia, leukopenia and raise of AST and ALT. In the absence of treatment, brucellosis becomes chronic or causes focalizations in joints and/or bones or spondylodisciitis of lumbar spine.

Diagnosis
Detection of this disease depends on various factors like
  • Blood culture in tryptose broth and bone marrow cultures - the brucellae are highly infective and the laboratory personnel must be on the alert
  • Classic Huddleson, Bengal Rose and/or Wright reactions - ELISA or 2-mercaptoethanol assay is used for IgM antibodies
  • Osteophytosis or degradation of antero-superior corner of lumbar vertebrae
  • Granulomatous hepatitis
Treatment
Following antibiotics have been proved to be effective
  • rifampicin
  • tetracyclins
  • gentamicin
  • streptomycin
These should be prescribed for many weeks due to the incubation of bacteria in the cells. For adults, the gold standard treatment is prescribed. It includes
  • intramuscular injections of streptomycin - daily 1 gram for 14 days
  • oral dose of doxycycline - daily 100 mg twice for 45 days
  • if streptomycin is unavailable, then intramuscular injection of gentamicin 5 mg/kg - daily once for 7 days
  • alternatively, oral dose of doxycycline and rifampin - daily twice for minimum 6 weeks
Prevention
There are a couple of ways to prevent Brucellosis.
  • pasteurizing all the milk (pure form or derived form like cheese) that is consumed by human beings
  • cent percent cleanliness in production of raw milk products

  • Brucellosis Causes, Symptoms, Signs, Diagnosis, Treatment,

    www.medicinenet.com/brucellosis/article.htm

    Brucellosis is an infectious disease caused by the Brucella bacteria. Read about the history of brucellosis, its symptoms, signs, diagnosis, treatment and prevention.


  • DBMD - Brucellosis - Centers for Disease Control and Prevention

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    Nov 13, 2012 Factsheet with cause, transmission, prevention, symptoms, and treatment.


  • Cattle Diseases - Brucellosis

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  • Brucellosis - Wikipedia, the free encyclopedia

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    Brucellosis, also called Bang's disease, Crimean fever, Gibraltar fever, Malta fever, Maltese fever, Mediterranean fever, rock fever, or undulant fever, is a highly ...


  • Brucellosis: Symptoms and Treatment - WebMD - Better

    www.webmd.com WebMD Home A to Z Guides

    WebMD explains the symptoms and treatment of brucellosis, a bacterial infection that can be spread from animals to humans.


  • Brucellosis - National Library of Medicine - PubMed Health

    www.ncbi.nlm.nih.gov Home Diseases and Conditions

    Aug 24, 2011 Brucellosis is an infectious disease that occurs from contact with animals carrying Brucella bacteria.


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  • CDC - Home - Brucellosis - Centers for Disease Control and

    www.cdc.gov/brucellosis

    Nov 12, 2012 Brucellosis is an infectious disease caused by bacteria. Provided by the U.S. Centers for Disease Control and Prevention (CDC).


  • Brucellosis - Diseases & Conditions - Medscape Reference

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  • Brucellosis (undulant fever, Malta fever) - Blue Book - Infectious ...

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    Guidelines for the control of brucellosis. ... Page content: Victorian statutory requirement Infectious agent Identification Incubation period Public health ...


  • Brucellosis - VetInfo - Veterinary Medical Information for Dogs ...

    www.vetinfo.com Dogs Reproduction Prenatal

    Encyclopedia of Canine Veterinary Medical Information. Brucellosis Brucellosis is a disease caused by a bacteria, Brucella canis. It is found throughout the world.


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  • Brucellosis in Dairy Cattle Symptoms, Diagnosis & Prevention

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    Brucellosis or Bangs disease is a highly contagious disease of cattle and buffaloes producing stormy abortions. The causative bacteria is Brucella abortus in ...

  • Brucellosis Factsheet - NSW Health

    www0.health.nsw.gov.au/factsheets/infectious/brucellosis.html

    Brucellosis is an infection that can be transmitted to humans from some animals such as cows, sheep, goats and pigs. While this disease is common in many parts of the ...

  • Brucellosis - Symptoms, Diagnosis, Treatment of Brucellosis -

    health.nytimes.com Times Health Guide b

    Brucellosis is an infectious disease that occurs from contact with animals carrying Brucella bacteria.

  • Brucellosis in humans and animals

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  • A review of gastrointestinal manifestations of Brucellosis Aziz S ...

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    Official Journal of Saudi Gastroenterology Association. ... Brucellosis is hyperendemic in the Kingdom of Saudi Arabia (KSA) with more than 8,000 cases reported each ...

  • Brucellosis: Symptoms and Treatment - WebMD - Better

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    WebMD explains the symptoms and treatment of brucellosis, a bacterial infection that can be spread from animals to humans.

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    Information on Brucellosis infections in dogs and how it is treated. ... Brucellosis is a bacterial disease that can lead to a wide range of problems, including ...

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