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*Caseous lymphadenitis:

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**''C. pseudotuberculosis'' carried on skin of sheep

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**Non-nitrate-reducing biotype

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**Infection follows tissue trauma such as shearing wounds

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**Incubation period 3 months

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**Chronic suppurative infection of sheep, goats and occasionally cattle

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**Abscessation of superficial and internal lymph nodes if haemtogenous spread occurs

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**Caseous abscesses with green colour and onion ring appearance

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**Ill thrift and pneumonia may occur

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**Condemnation of carcasses and hides

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**Infection spread by pus from abscesses, and oculonasal secretions

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**Organism survives in environment for several months

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**Sandwich ELISA detects circulating antibodies to phospholipase toxin

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**Control: importation measures including screening; culling of infected sheep, stict hygiene; inactivated vaccine

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*Ulcerative lymphangitis:

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**Nitrate reducing biotype

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**Disease in horses and cattle

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**Infection through skin wounds

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**Lymphangitis of lower limbs or abscessation in pectoral region

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**Slow onset, usually becomes chronic

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**Affected lymphatic vessels swollen and firm with nodules

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**Oedema in affected limbs

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**Ulcerative nodules exude thick green pus

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**Lymphangitis and lymphadenitis in cattle with abscesses as well as coronary band lesions causing lameness

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**Antibiotic treatment and topical iodophore shampoo

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*May cause [[Muscles Inflammatory - Pathology#Abscesses|myositis]]

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*Involved in [[Bacterial skin infections - Pathology#Deep pyoderma|deep pyoderma]]

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[[~~Category:~~Corynebacterium species]][[~~Category~~:~~Sheep]~~][[Category:~~Horse~~]][[Category:~~Cattle~~]]

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{{Taxobox

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|name =''Corynebacterium pseudotuberculosis''

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|phylum =Actinobacteria

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|order =Actinomycetales

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|family =Corynebacteriaceae

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|genus =Corynebacterium

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|species =''C.pseudotuberculosis''

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}}

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Also known as: '''''C.pseudotuberculosis'''''

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''Corynebacterium pseudotuberculosis'' is a species of the ''[[Corynebacterium species - Overview|Corynebacterium]]'' genus. It causes [[Caseous Lymphadenitis|caseous lymphadenitis]] and is involved in [[Bacterial skin infections - Pathology#Deep pyoderma|deep pyoderma]].

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The organism survives in environment for several months and causes disease in horses and cattle.

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''C. pseudotuberculosis'' produces small, white colonies, surrounded by a narrow zone of complete haemolysis. The colonies become dry and cream-coloured. Certain strains of ''C. pseudotuberculosis'' reduce nitrates and an enhancement of haemolysis is produced by ''C. pseudotuberculosis'' when inoculated across a streak of ''[[Rhodococcus equi]]''.

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{{Learning

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|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=title%3A%28%22Corynebacterium+pseudotuberculosis%22%29+&occuring1=freetext&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=52&y=17 ''Corynebacterium pseudotuberculosis'' publications since 2000]

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}}

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[[Category:Corynebacterium species]]

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[[Category:Expert_Review]]

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Revision as of 18:14, 5 July 2012

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