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Listeria species - Overview (view source)

Revision as of 09:31, 7 July 2010

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==Diagnosis==

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Specimens for should include CSF in neural cases, cotyledons in abortion, liver, spleen and blood in septicaemia

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Specimens for diagnosis should include; CSF in neural cases, cotyledons in abortion and liver, spleen and blood in septicaemia. Immunofluorescence using monoclonal antibodies can be used. Histology of brain demonstrates microabscesses and lymphocytic cuffing in the brainstem. Smears of cotyledons can be diagnostic in abortion. High protein and cell counts in CSF can be taken in neural cases and isolation on blood and MacConkey agar in septicaemia.

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*Immunofluorescence using monoclonal antibodies

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*Histology of brain demonstrates microabscesses and lymphocytic cuffing in brainstem

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*Smears of cotyledons

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*High protein and cell counts in CSF

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*Isolation on blood and MacConkey agar

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~~===Treatment and control===~~

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*Ampicillin or amoxycillin in early stages of septicaemic listeriosis

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*Sub-conjuntival antibiotics and corticosteroids for ocular listeriosis

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*Avoid poor quality silage and discontinue silage-feeding in an outbreak

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Causes abortions in cattle and sheep last third of pregnancy. Foetal membranes often retained leading to metritis. The placenta is covered by purulent exudate and there are focal pinpoint yellow lesions in foetal liver.

[[Category:Bacteria]][[Category:Gram_positive_bacteria]][[Category:Rods]]

[[Category:To_Do_-_AimeeHicks]]

Aimee.e.hicks

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