Difference between revisions of "Listeria monocytogenes"

Revision as of 10:47, 25 June 2010

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 susceptible during pregnancy due to lowered cell-mediated immunity
Neural listeriosis:
- Incubation period 14-40 days
- Meningoencephalitis
- Dullness, circling, head tilt, facial paralysis, drool saliva, droop of eyelid and ear
- Exposure keratitis
- Fever during early stages
- Recumbency and death within a few days in sheep and goats
- Abortion up to 12 days after infection in cattle; usually recover but may get septicaemia
Septicaemic listeriosis:
- Incubation period 2-3 days
- Lambs and occasionally pregnant sheep
- Occurs in newborn piglets, foals, poultry, adult sheep
Keratoconjunctivitis in cattle and sheep - direct contact with silage via eye
Pneumonia, myocarditis, enodcarditis
Zoonosis - consumption of contaminated unpasteurised milk; memingitis and meningoencephalitis; abortion

@@ Line 1: / Line 1: @@
-{{Taxobox
+*Outbreaks of listeriosis caused by ''L. monocytogenes'' seasonal and linked to silage feeding
-|name               =''Listeria monocytogenes''
+*Replicates in poor quality silage where the pH excedes 5.5
-|phylum             =Firmicutes
+*Animals highly susceptible during pregnancy due to lowered cell-mediated immunity
-|class              =Bacilli
+*Neural listeriosis:
-|order              =Bacillales
+**Incubation period 14-40 days
-|family             =Listeriaceae
+**Meningoencephalitis
-|genus              =[[:Category:Listeria species|Listeria]]
+**Dullness, circling, head tilt, facial paralysis, drool saliva, droop of eyelid and ear
-|species            =''L.monocytogenes''
+**Exposure keratitis
-}}
+**Fever during early stages
-==Introduction==
+**Recumbency and death within a few days in sheep and goats
-[[File:listeria 2.jpg|right|thumb|250px|<small><center>''Listeria monocytogenes'' (MarcoTolo 2006, Wikimedia commons)</center></small>]]
+**Abortion up to 12 days after infection in cattle; usually recover but may get septicaemia
-''Listeria monocytogenes'' is one of the six species belonging to the genus [[Listeria species - Overview|''Listeria'']]. It is gram positive bacteria.
+*Septicaemic listeriosis:
+**Incubation period 2-3 days
+**Lambs and occasionally pregnant sheep
+**Occurs in newborn piglets, foals, poultry, adult sheep
+*Keratoconjunctivitis in cattle and sheep - direct contact with silage via eye
+*Pneumonia, myocarditis, enodcarditis
+*Zoonosis - consumption of contaminated unpasteurised milk; memingitis and meningoencephalitis; abortion
-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%.
+[[Category:Listeria species]][[Category:Sheep]][[Category:Pig]][[Category:Horse]]
+[[Category:To_Do_-_Bacteria]]
-''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.
-{{Learning
-|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]
-[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28sheep%29 ''Listeria monocytogenes'' in sheep publications]
-[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28goats%29 ''Listeria monocytogenes'' in goats publications]
-[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28dogs%29 ''Listeria monocytogenes'' in dogs publications]
-[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28cats%29 ''Listeria monocytogenes'' in cats publications]
-[http://www.cabdirect.org/search.html?q=title%3A%28%22Listeria+monocytogenes%22%29+AND+od%3A%28horses%29 ''Listeria monocytogenes'' in horses publications]
-}}
-[[Category:Listeria species]]

Difference between revisions of "Listeria monocytogenes"

Revision as of 10:47, 25 June 2010

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