Difference between revisions of "Bordetella bronchiseptica"

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(Created page with '===Infectious canine tracheitis/Kennel cough=== *''B. bronchiseptica'' acts as a primary pathogen in [[Respiratory Viral Infections - Pathology#Infectious canine tracheitis|Infe…')
 
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*increases with high stocking density and poor ventilation
 
*increases with high stocking density and poor ventilation
 
*Vaccine available
 
*Vaccine available
[[Category:Bordetalla species]][[Category:Dog]][[Category:Pig]]
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[[Category:Bordetella species]][[Category:Dog]][[Category:Pig]]

Revision as of 20:59, 10 May 2010

Infectious canine tracheitis/Kennel cough

  • B. bronchiseptica acts as a primary pathogen in Infectious canine tracheitis
  • Frequently isolated from dogs with respiratory disease
  • Often found with viruses or mycoplasma
  • Adheres to ciliated epithelial cells in the trachea
  • Colonisation and proliferation in trachea
  • Releases toxins causing epithelial necrosis and prevents ciliary clearance
  • Irritation to tract causes coughing
  • Mortality rates low
  • Peribronchial inflammation and bronchopneumonia

can result in unvaccinated puppies or immunosuppressed dogs

  • Severe pneumonia following secondary infection e.g. with Streptococci
  • Fatal bronchopneumonia if occurs secondary to canine distemper virus
  • Transmission via respiratory secretions by direct contact or aerosol and on fomites
  • Clinical signs:
    • Develop within 3-4 days; persist for up to 2 weeks
    • Coughing
    • Gagging
    • Mild serous oculonasal discharge
  • Treatments includes antibiotics if coughing persists or bronchopneumonia develops
  • Live intranasal vaccines
  • Also found in respiratory tract of cats; can cause pneumonia in kittens; vaccine available

Atrophic Rhinitis

  • B. bronchiseptica causes Atrophic rhinitis of pigs in association with Pasteurella multocida
  • Colonises nasopharynx
  • Infection must occur during first few weeks of life
  • Produces dermonecrotic toxin which damages osteoblasts, preventing bone formation
  • Leads to turbinate atrophy without distortion of the snout in uncomplicated infections
  • Atrophic rhinitis results when Pateurella multocida colonises and produces osteolytic toxin, leading to bone resorption
  • Malformation of snout in growing pigs as well as poor growth
  • increases with high stocking density and poor ventilation
  • Vaccine available