Changes

Also known as: '''''Actinobacillosis — Actinobacillus suis septicaemia in pigs — A. equuli in swine — Otitis media, externa, interna, middle and inner ear infections'''''

Also known as: '''''Actinobacillosis — Actinobacillus suis septicaemia in pigs — A. equuli in swine — Otitis media, externa, interna, middle and inner ear infections'''''

==Introduction==

==Introduction==

Actinobacillosis is caused by the '''bacteria''' [[Actinobacillus suis|'''''Actinobacillus suis''''']]. The disease affects suckling, weanling and fattening pigs, and adult pigs and it is thought that it colonises piglets within the first three weeks of life.   

Actinobacillosis is caused by the '''bacterium''' [[Actinobacillus suis|'''''Actinobacillus suis''''']]. The disease affects suckling, weanling and fattening pigs, and adult pigs and it is thought that it colonises piglets within the first three weeks of life.   

In '''piglets''' aged 1 to 8 weeks old the organism causes acute and rapidly '''fatal septicaemia''', and '''localized infections''' such as endocarditis, polyarthritis, and '''respiratory distress''' may also been seen with additional '''neurological signs'''.  

In '''piglets''' aged 1 to 8 weeks old the organism causes acute and rapidly '''fatal septicaemia''', and '''localized infections''' such as endocarditis, polyarthritis, and '''respiratory distress''' may also been seen with additional '''neurological signs'''.  

==Signalment==

==Signalment==

'''High health status herds''' with lower immune challenges are '''more at risk''' then conventional herds.  Piglets from high health status herds can suddenly die without any premonitory signs. Disease progression can be '''exaccerbated by excessive temperature fluctuation, high humidity, mixing of pigs of different ages and overcrowding'''. '''Genetic make up''' and '''immune status''' can also influence infectivity rate and clinical signs.

'''High health status herds''' with lower immune challenges are '''more at risk''' then conventional herds.  Piglets from high health status herds can suddenly die without any premonitory signs. Disease progression can be '''exacerbated by excessive temperature fluctuation, high humidity, mixing of pigs of different ages and overcrowding'''. '''Genetic make up''' and '''immune status''' can also influence infectivity rate and clinical signs.

==Clinical Signs==

==Clinical Signs==

Clinical signs vary from fever, lethargy, depression, [[Erysipelas - Pig#Clinical Signs|'''erysipelas-like lesions''']], abscesses, haemorrhage, vomiting/regurgitation and '''lameness''' and '''multiple joint swelling'''.  More serious cases progress to '''pneumonia''' (clinical signs similar to [[Actinobacillus pleuropneumoniae#Clinical Signs| ''A. pleuropneumoniae'']]) and '''sudden death'''.   

Clinical signs vary from fever, lethargy, depression, [[Erysipelas - Pig#Clinical Signs|'''erysipelas-like lesions''']], abscesses, haemorrhage, vomiting/regurgitation and '''lameness''' and '''multiple joint swelling'''.  More serious cases progress to '''pneumonia''' (clinical signs similar to [[Actinobacillus pleuropneumoniae#Clinical Signs| ''A. pleuropneumoniae'']]) and '''sudden death'''.   

'''Cardiorespiratory signs''' include tachycardia, heart murmurs, purulent or serous occulonasal discharges, sneezing, coughing, abnormal lung sounds, dyspnoea, '''cyanosis''' changes in heart rate and open mouthed breathing.   

'''Cardiorespiratory signs''' include tachycardia, heart murmurs, purulent or serous occulonasal discharges, sneezing, coughing, abnormal lung sounds, dyspnoea, '''cyanosis''' changes in heart rate and open-mouthed breathing.   

'''Aural purulent mucoid discharge''' and increased amounts of wax are present along with a '''foul odour'''.  Pigs can become '''deaf''' and are often found rubbing and scratching their ears.  

'''Aural purulent mucoid discharge''' and increased amounts of wax are present along with a '''foul odour'''.  Pigs can become '''deaf''' and are often found rubbing and scratching their ears.  

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[[Category:Neurological Diseases - Pig]]

[[Category:Neurological Diseases - Pig]]

[[Category:Cardiovascular Diseases - Pig]]

[[Category:Cardiovascular Diseases - Pig]]

[[Category:Respiratory Diseases - Pig]]

[[Category:Respiratory Diseases - Pig]]

[[Category:Musculoskeletal Diseases - Pig]]

[[Category:Musculoskeletal Diseases - Pig]]

[[Category:CABI Expert Review]]

[[Category:CABI Expert Review Completed]][[Category:CABI AHPC Pages]]

[[Category:Cardiology Section]]