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===''Haemophilus parasuis''===
===''Haemophilus parasuis''===
*Serotype B causes
*Serotype B causes Glasser's disease in pigs
*Glasser's disease
**Causes a polyserositis - pericarditis, peritonitis, pleurisy and meningitis - in pigs 3-10 weeks old
**Sporadic outbreaks in the UK
**Can be fatal in 2-5 days
**Chronic arthritis, meningitis and intestinal obstruction due to adhesions in surviving pigs
*Fibrinous pneumonia secondary to enzootic pneumonia or virus infection
===''Haemophilus somnus''===
*Causes infectious thromboencephalitis in cattle 1-3 years old
*Found in the USA and Europe, including UK
*Causes a meningoencephalitis with fibrinous arterial thrombosis and necrosis
*Causes fever, staggering and dyspnoea, progressing to somnolence, paralysis and death
*Mortality can be high
===''Haemophilus paragalinarum''===
*Conjunctivitis in poultry
==='''Haemophilus influenzae'===
*Human respiratory disease