Difference between revisions of "Mycoplasma mycoides subsp. mycoides"

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**Vaccination in endemic regions[[Category:Mycoplasmas]][[Category:Cattle]]
 
**Vaccination in endemic regions[[Category:Mycoplasmas]][[Category:Cattle]]
 
[[Category:Goat]]
 
[[Category:Goat]]
 +
[[Category:To_Do_-_Bacteria]]

Revision as of 10:52, 25 June 2010

Contagious bovine pleuropneumonia

  • Contagious bovine pleuropneumonia is caused by M. mycoides subsp. mycoides small colony type
  • A severe contagious disease of cattle
  • Endemic in Africa, the Middle East and Asia
  • Aerosol transmission by close contact with clinically or subclinically affected animals
  • Severity depends on strain and host susceptibility
  • Slow spread of infection
  • 50% morbidity; mortality rate high in severe outbreaks
  • Large colony type causes pleuropneumonia, mastitis, septicaemia and polyarthritis
  • Clinical signs
    • Acute onset fever, anorexia, depression, lowered milk yield, hyperpnoea, coughing and a mucopurulent nasal discharge
    • Dyspnoea occurs with abducted elbows and extended necks and an expiratory grunt
    • Can be fatal within 1-3 weeks
    • Calves may suffer from arthritis, synovitis and endocarditis
  • Gross pathology
    • Marbled appearance to lungs with consolidated grey and red lobules separated by emphysematous areas
    • Serofibrinous pleural fluid
    • Necrotic foci surrounded by fibrous capsules in chronic cases act as source of infection
  • Diagnosis
    • Clinical signs and post-mortem appearance
    • PCR on pleural fluid, lung tissue, regional lymph nodes or bronchoalveolar lavage fluid
    • Fluorescent antibody test
    • Serological tests such as serum agglutination, haemagglutination, complement fixation, ELISA
  • Treatment and control
    • Slaughter of affected cattle in counries where the disease is exotic
    • Movement restrictions, quaranteen and slaughter of carrier animals in endemic countries


  • M. mycoides subsp. 'mycoides causes septicaemia, pleuropneumonia, arthritis and mastitis in goats
    • Vaccination in endemic regions