Difference between revisions of "Haemophilus parasuis"

Revision as of 14:16, 20 July 2010

Inhabits nasopharynx of normal swine
Serotype B causes Glasser's disease in pigs
Glasser's disease
- Septicaemia
- Acute inflammation affecting pleua, peritoneum, mediastinum, pericardium, joints and meninges
- Causes a polyserositis - pericarditis, peritonitis, pleurisy and meningitis - in pigs 3-10 weeks old
- Also causes suppurative bronchopneumonia, pleuritis, 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
- 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

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 **Septicaemia
 **Acute inflammation affecting pleua, peritoneum, mediastinum, pericardium, joints and meninges
-**Causes a polyserositis - pericarditis, [[Peritonitis - Pathology|peritonitis]], pleurisy and meningitis - in pigs 3-10 weeks old
+**Causes a polyserositis - pericarditis, [[Peritonitis|peritonitis]], pleurisy and meningitis - in pigs 3-10 weeks old
 **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