|
|
| (7 intermediate revisions by 2 users not shown) |
| Line 1: |
Line 1: |
| − | (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>]]
| |
| − | | |
| − |
| |
| − | *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 [[Joints Inflammatory - Pathology#In Cattle|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
| |
| − | *Caused by [[Mycoplasma mycoides subsp. mycoides|''Mycoplasma mycoides'']], small colony variant
| |
| − | *Causes a fibrinonecrotic [[Pneumonia Overview#Infectious causes of pneumonia|pneumonia]] and [[Pleural Cavity & Membranes Inflammatory - Pathology|fibrinous pleuritis]]
| |
| − | *Also affects caudodorsal areas
| |
| − | *[[Bronchopneumonia|Bronchopneumonia]] -> [[Lobar Pneumonia|lobar pneumonia]]
| |
| − | *Sequestra are common
| |
| − | *NB: similarity to pneumonic pasteurellosis but CBPP has more pronounced marbled effect
| |
| − | *Interstitial septa are markedly widened by fibrinous exudate and the necrotic areas may have a fibrous capsule
| |
| − | *Large colony variant will cause a similar disease in goats
| |
| − | | |
| − | | |
| − | [[Category:Respiratory Diseases - Cattle]][[Category:To_Do_-_Clinical]]
| |
| − | [[Category:Respiratory_Bacterial_Infections]]
| |