Difference between revisions of "Glasser's Disease"
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==Description== | ==Description== | ||
| − | Glassers disease is caused by the bacteria | + | Glassers disease is caused by the bacteria ''[[Haemophilus parasuis]]'' |
| − | It is | + | It is a systemic condition affecting pigs characterised by polyserositis, arthritis and meningitis. It is rapidly fatal in the acute form, in some cases animals die before the development of lesions. |
==Signalment== | ==Signalment== | ||
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==References== | ==References== | ||
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*May cause suppurative [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|broncho]][[Lungs Inflammatory - Pathology#Infectious causes of pneumonia|pneumonia]] and [[Pleural Cavity & Membranes Inflammatory - Pathology|pleuritis]] (as part of polyserositis) | *May cause suppurative [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|broncho]][[Lungs Inflammatory - Pathology#Infectious causes of pneumonia|pneumonia]] and [[Pleural Cavity & Membranes Inflammatory - Pathology|pleuritis]] (as part of polyserositis) | ||
*Stress of mixing, weaning and adverse environmental conditions are predisposing to the disease | *Stress of mixing, weaning and adverse environmental conditions are predisposing to the disease | ||
| − | + | ||
**Septicaemia | **Septicaemia | ||
| − | **Acute inflammation affecting | + | **Acute inflammation affecting pleura, peritoneum, mediastinum, pericardium, joints and meninges |
| − | **Causes a polyserositis - pericarditis, [[Peritonitis|peritonitis]], pleurisy and meningitis | + | **Causes a polyserositis - pericarditis, [[Peritonitis|peritonitis]], pleurisy and meningitis |
**Also causes suppurative [[Respiratory Bacterial Infections - Pathology#Glasser's disease|bronchopneumonia, pleuritis]], [[Joints Inflammatory - Pathology#In Pigs|polyarthritis]] (also ''H. suis) | **Also causes suppurative [[Respiratory Bacterial Infections - Pathology#Glasser's disease|bronchopneumonia, pleuritis]], [[Joints Inflammatory - Pathology#In Pigs|polyarthritis]] (also ''H. suis) | ||
| − | **Expressed lesions vary between animals - meningitis is most consistent, arthritis in 20% of cases | + | |
| − | + | **Fever, general malaise, repsiratory and abdominal signs, lameness, paralysis or convulsions. Expressed lesions vary between animals - meningitis is most consistent, arthritis in 20% of cases | |
| + | |||
**Sporadic outbreaks in the UK | **Sporadic outbreaks in the UK | ||
**Morbidity and mortality often low due to widespread acquired resistance | **Morbidity and mortality often low due to widespread acquired resistance | ||
Revision as of 10:35, 27 July 2010
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This article is still under construction. |
Description
Glassers disease is caused by the bacteria Haemophilus parasuis It is a systemic condition affecting pigs characterised by polyserositis, arthritis and meningitis. It is rapidly fatal in the acute form, in some cases animals die before the development of lesions.
Signalment
The disease usually affects weanlings 6-10 weeks old when maternal antibodies wane but it can affect pigs of any age, particularly naive pigs introduced into a herd or through exposure to a strain to which there is little immunity.
The disease is endemic in most herds and has been associated with PRRS, Circovirus and Swine Influenza.
Diagnosis
Clinical signs
- Pyrexia
- Dyspneoa with abdominal effort
- Cough
- Swollen joints and arthritis
- CNS signs, Trembling and paddling
- Sudden death
Pathology
Treatment
Prognosis
References
- May cause suppurative bronchopneumonia and pleuritis (as part of polyserositis)
- Stress of mixing, weaning and adverse environmental conditions are predisposing to the disease
- Septicaemia
- Acute inflammation affecting pleura, peritoneum, mediastinum, pericardium, joints and meninges
- Causes a polyserositis - pericarditis, peritonitis, pleurisy and meningitis
- Also causes suppurative bronchopneumonia, pleuritis, polyarthritis (also H. suis)
- Fever, general malaise, repsiratory and abdominal signs, lameness, paralysis or convulsions. Expressed lesions vary between animals - meningitis is most consistent, arthritis in 20% of cases
- Sporadic outbreaks in the UK
- Morbidity and mortality often low due to widespread acquired resistance
- Mortality up to 50% in some outbreaks e.g. specific pathogen-free herds
- Can be fatal in 2-5 days
- Chronic arthritis, meningitis and intestinal obstruction due to adhesions in some surviving pigs
- Due to transport, environmental stresses, dietary and managemental factors
- Fibrinous pneumonia secondary to enzootic pneumonia or virus infection e.g. swine influenza
| Also known as: | b |