Difference between revisions of "Listeria monocytogenes"

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(Created page with '*Outbreaks of listeriosis caused by ''L. monocytogenes'' seasonal and linked to silage feeding *Replicates in poor quality silage where the pH excedes 5.5 *Animals highly suscept…')
 
 
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*Outbreaks of listeriosis caused by ''L. monocytogenes'' seasonal and linked to silage feeding
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{{Taxobox
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*Replicates in poor quality silage where the pH excedes 5.5
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|name              =''Listeria monocytogenes''
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*Animals highly susceptible during pregnancy due to lowered cell-mediated immunity
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|phylum            =Firmicutes
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*Neural listeriosis:
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|class              =Bacilli
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**Incubation period 14-40 days
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|order              =Bacillales
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**Meningoencephalitis
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|family            =Listeriaceae
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**Dullness, circling, head tilt, facial paralysis, drool saliva, droop of eyelid and ear
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|genus              =[[:Category:Listeria species|Listeria]]
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**Exposure keratitis
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|species            =''L.monocytogenes''
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**Fever during early stages
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}}
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**Recumbency and death within a few days in sheep and goats
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==Introduction==
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**Abortion up to 12 days after infection in cattle; usually recover but may get septicaemia
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[[File:listeria 2.jpg|right|thumb|250px|<small><center>''Listeria monocytogenes'' (MarcoTolo 2006, Wikimedia commons)</center></small>]]
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*Septicaemic listeriosis:
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''Listeria monocytogenes'' is one of the six species belonging to the genus [[Listeria species - Overview|''Listeria'']]. It is gram positive bacteria.
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**Incubation period 2-3 days
 
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**Lambs and occasionally pregnant sheep
 
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**Occurs in newborn piglets, foals, poultry, adult sheep
 
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*Keratoconjunctivitis in cattle and sheep - direct contact with silage via eye
 
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*Pneumonia, myocarditis, enodcarditis
 
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*Zoonosis - consumption of contaminated unpasteurised milk; memingitis and meningoencephalitis; abortion
 
  
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[[Category:Listeria species]][[Category:Sheep]][[Category:Pig]][[Category:Horse]]
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Outbreaks of [[Listeriosis|listeriosis]] in the human population are caused by ''L. monocytogenes''. The outbreaks are seasonal and linked to silage feeding. In most cases, the symptoms are those of a mild gastroenteritis or gripe. However, people who belong to the high - risk groups (elderly, infants, pregnant women or people with immunosuppression) might develop more serious symptoms (invasive disease) caused by meningoencephalitis,  septicemia, miscarriage and mortality rate of approximately 30%.
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''Listeria monocytogenes'' replicates in poor quality silage, where the pH exceeds 5.5.
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Animals are highly susceptible during pregnancy due to lowered cell-mediated immunity.
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{{Learning
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|literature search = [http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28cattle%29  ''Listeria monocytogenes'' cattle publications]
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[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28sheep%29 ''Listeria monocytogenes'' in sheep publications]
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[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28goats%29 ''Listeria monocytogenes'' in goats publications]
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[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28dogs%29 ''Listeria monocytogenes'' in dogs publications]
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[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28cats%29 ''Listeria monocytogenes'' in cats publications]
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[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28horses%29 ''Listeria monocytogenes'' in horses publications]
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}}
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[[Category:Listeria species]]

Latest revision as of 16:07, 21 February 2021

Listeria monocytogenes
Phylum Firmicutes
Class Bacilli
Order Bacillales
Family Listeriaceae
Genus Listeria
Species L.monocytogenes

Introduction

Listeria monocytogenes (MarcoTolo 2006, Wikimedia commons)

Listeria monocytogenes is one of the six species belonging to the genus Listeria. It is gram positive bacteria.

Outbreaks of listeriosis in the human population are caused by L. monocytogenes. The outbreaks are seasonal and linked to silage feeding. In most cases, the symptoms are those of a mild gastroenteritis or gripe. However, people who belong to the high - risk groups (elderly, infants, pregnant women or people with immunosuppression) might develop more serious symptoms (invasive disease) caused by meningoencephalitis, septicemia, miscarriage and mortality rate of approximately 30%.

Listeria monocytogenes replicates in poor quality silage, where the pH exceeds 5.5.

Animals are highly susceptible during pregnancy due to lowered cell-mediated immunity.


Listeria monocytogenes Learning Resources
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Literature Search
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(CABI log in required) 		Listeria monocytogenes cattle publications

Listeria monocytogenes in sheep publications

Listeria monocytogenes in goats publications

Listeria monocytogenes in dogs publications

Listeria monocytogenes in cats publications

Listeria monocytogenes in horses publications


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