Difference between revisions of "Actinobacillus equuli"

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(Created page with '*Commensal of the equine intestinal and reproductive tract *Pathogenesis and clinical signs: **Foals infected ''in utero'' or or after birth via the umbilicus **Infection at birt…')
 
 
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**Death usually occurs within 1-2 days
 
**Death usually occurs within 1-2 days
 
**In foals that survive neonatal infection the condition progresses to cause joint infections and purulent nephritis, enteritis or pneumonia
 
**In foals that survive neonatal infection the condition progresses to cause joint infections and purulent nephritis, enteritis or pneumonia
**''A. equuli'' in [[Joints Inflammatory - Pathology#In Horses|arthritis of horses]]
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**''A. equuli'' in [[Infectious Arthritis#In Horses|arthritis of horses]]
**Abortion, septicaemia and [[Peritoneal Cavity Inflammatory - Pathology#In horses|peritonitis in horses]]
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**Abortion, septicaemia and [[Peritonitis#In horses|peritonitis in horses]]
 
*Diagnosis:
 
*Diagnosis:
 
**Specimens cultured on blood agar and MacConkey agar and incubated aerobically for 1-3 days
 
**Specimens cultured on blood agar and MacConkey agar and incubated aerobically for 1-3 days
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**Enteritis in calves
 
**Enteritis in calves
 
**RTX group cytotoxin present
 
**RTX group cytotoxin present
[[Category:Actinobacillus_species]][[Category:Horse]]
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===Hepatitis===
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*foals
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*bacteria from the septicaemia localise in the [[Liver - Anatomy & Physiology|liver]] and other tissues, including the [[Urinary System Overview - Anatomy & Physiology#Upper Urinary System|kidney]]
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[[Category:To Do - Minor]]
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[[Category:Actinobacillus_species]]
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[[Category:Pig Bacteria]][[Category:Cattle Bacteria]]
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[[Category:Hepatitis,_Bacterial]]
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[[Category:To_Do_-_Bacteria]]
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[[Category:Horse Bacteria]]

Latest revision as of 15:57, 9 May 2011

  • Commensal of the equine intestinal and reproductive tract
  • Pathogenesis and clinical signs:
    • Foals infected in utero or or after birth via the umbilicus
    • Infection at birth causes severe enteritis and septicaemia within 24 hours, known as sleepy foal disease
    • Foals become pyrexic and recumbent
    • Death usually occurs within 1-2 days
    • In foals that survive neonatal infection the condition progresses to cause joint infections and purulent nephritis, enteritis or pneumonia
    • A. equuli in arthritis of horses
    • Abortion, septicaemia and peritonitis in horses
  • Diagnosis:
    • Specimens cultured on blood agar and MacConkey agar and incubated aerobically for 1-3 days
    • Sticky colonies with variable haemolysis on blood agar
    • Lactose-fermenting colonies on MacConkey agar
  • Treatment and control:
    • Antimicrobials ineffective unless early in course of disease
    • Blood trasfusion and administration of colostrum
    • Good hygiene
    • Consider prophylactic antibiotics for new-born foals
    • Bacteria susceptible to streptomycin, tetracyclines and ampicillin
  • In other animals:
    • Septicaemia in piglets
    • Arthritis and enteritis in pigs
    • Enteritis in calves
    • RTX group cytotoxin present

Hepatitis

  • foals
  • bacteria from the septicaemia localise in the liver and other tissues, including the kidney