Difference between revisions of "Glasser's Disease"
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==Description== | ==Description== | ||
| − | '''Glasser's disease''' is caused by the bacteria ''[[Haemophilus parasuis | + | '''Glasser's 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. | 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. | ||
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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 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 occurs '''worldwide''', it is endemic in most herds but incidence of clinical disease in the UK is sporadic.Increased prevelance hgas been associated with PRRS, Circovirus and Swine Influenza. | + | The disease occurs '''worldwide''', it is endemic in most herds but incidence of clinical disease in the UK is sporadic.Increased prevelance hgas been associated with [[Porcine Reproductive and Respiratory Syndrome|PRRS]], [[Porcine Circoviruses|Circovirus]] and [[Swine Influenza|Swine Influenza.]] |
Revision as of 11:06, 27 July 2010
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This article is still under construction. |
Description
Glasser's 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 occurs worldwide, it is endemic in most herds but incidence of clinical disease in the UK is sporadic.Increased prevelance hgas 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 |