Difference between revisions of "Contagious Bovine Pleuropneumonia"
Jump to navigation
Jump to search
Line 32: | Line 32: | ||
**Vaccination in endemic regions | **Vaccination in endemic regions | ||
*Caused by [[Mycoplasma mycoides subsp. mycoides|''Mycoplasma mycoides'']], small colony variant | *Caused by [[Mycoplasma mycoides subsp. mycoides|''Mycoplasma mycoides'']], small colony variant | ||
− | *Causes a fibrinonecrotic [[ | + | *Causes a fibrinonecrotic [[Pneumonia Overview#Infectious causes of pneumonia|pneumonia]] and [[Pleural Cavity & Membranes Inflammatory - Pathology|fibrinous pleuritis]] |
*Also affects caudodorsal areas | *Also affects caudodorsal areas | ||
− | *[[ | + | *[[Bronchopneumonia|Bronchopneumonia]] -> [[Lobar Pneumonia|lobar pneumonia]] |
*Sequestra are common | *Sequestra are common | ||
*NB: similarity to pneumonic pasteurellosis but CBPP has more pronounced marbled effect | *NB: similarity to pneumonic pasteurellosis but CBPP has more pronounced marbled effect |
Revision as of 18:40, 19 February 2011
(CBPP)
- 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
- Caused by Mycoplasma mycoides, small colony variant
- Causes a fibrinonecrotic pneumonia and fibrinous pleuritis
- Also affects caudodorsal areas
- Bronchopneumonia -> 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