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− | (CBPP)
| + | #redirect[[Mycoplasma mycoides subsp. mycoides]] |
− | [[Image:Contagious bovine pleuropneumonia.jpg|right|thumb|100px|<small><center>Contagious bovine pleuropneumonia (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
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− | *Aerosol transmission by close contact with clinically or subclinically affected animals
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− | *Severity depends on strain and host susceptibility
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− | *Slow spread of infection
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− | *50% morbidity; mortality rate high in severe outbreaks
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− | *Large colony type causes pleuropneumonia, mastitis, septicaemia and polyarthritis
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− | *Clinical signs
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− | **Acute onset fever, anorexia, depression, lowered milk yield, hyperpnoea, coughing and a mucopurulent nasal discharge
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− | **Dyspnoea occurs with abducted elbows and extended necks and an expiratory grunt
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− | **Can be fatal within 1-3 weeks
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− | **Calves may suffer from [[Joints Inflammatory - Pathology#In Cattle|arthritis]], synovitis and endocarditis
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− | *Gross pathology
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− | **Marbled appearance to lungs with consolidated grey and red lobules separated by emphysematous areas
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− | **Serofibrinous pleural fluid
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− | **Necrotic foci surrounded by fibrous capsules in chronic cases act as source of infection
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− | *Diagnosis
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− | **Clinical signs and post-mortem appearance
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− | **PCR on pleural fluid, lung tissue, regional lymph nodes or bronchoalveolar lavage fluid
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− | **Fluorescent antibody test
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− | **Serological tests such as serum agglutination, haemagglutination, complement fixation, ELISA
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− | *Treatment and control
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− | **Slaughter of affected cattle in counries where the disease is exotic
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− | **Movement restrictions, quaranteen and slaughter of carrier animals in endemic countries
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− | *''M. mycoides'' subsp. 'mycoides'' causes septicaemia, pleuropneumonia, arthritis and mastitis in goats
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− | **Vaccination in endemic regions
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− | *Caused by [[Mycoplasma mycoides subsp. mycoides|''Mycoplasma mycoides'']], small colony variant
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− | *Causes a fibrinonecrotic [[Pneumonia Overview#Infectious causes of pneumonia|pneumonia]] and [[Pleural Cavity & Membranes Inflammatory - Pathology|fibrinous pleuritis]]
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− | *Also affects caudodorsal areas
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− | *[[Bronchopneumonia|Bronchopneumonia]] -> [[Lobar Pneumonia|lobar pneumonia]]
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− | *Sequestra are common
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− | *NB: similarity to pneumonic pasteurellosis but CBPP has more pronounced marbled effect
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− | *Interstitial septa are markedly widened by fibrinous exudate and the necrotic areas may have a fibrous capsule
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− | *Large colony variant will cause a similar disease in goats
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− | [[Category:Respiratory Diseases - Cattle]][[Category:To_Do_-_Clinical]]
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− | [[Category:Respiratory_Bacterial_Infections]]
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