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→History and Clinical Signs
The most recognised form of listeriosis in ruminants affects the nervous system causing meningoencephalitis. Animals present depressed, sometimes with a head tilt, facial paralysis, a drooping eyelid, profuse salivation and circling towards the side of the lesion. In terminally affected animals who are recumbent it is common to see unvoluntary running movements. Death can follow clinical signs acutely and is often within 24-48 hours.
The most recognised form of listeriosis in ruminants affects the nervous system causing meningoencephalitis. Animals present depressed, sometimes with a head tilt, facial paralysis, a drooping eyelid, profuse salivation and circling towards the side of the lesion. In terminally affected animals who are recumbent it is common to see unvoluntary running movements. Death can follow clinical signs acutely and is often within 24-48 hours.
In monogastric animals and young ruminants listeriosis presents differently causing septicaemia which can also be fatal.
In monogastric animals and young ruminants listeriosis presents differently causing septicaemia which can also be fatal.
If animals are infected whilst pregnant this can cause abortion up to 12 days later with a purulent exudate covering the placenta. Animals are affected in the last trimester of gestation having shown no previous clinical signs. Following abortion the animal will often recover normally unless the foetus is retained and metritis will develop.
If animals are infected whilst pregnant this can cause abortion up to 12 days later with a purulent exudate covering the placenta. Animals are affected in the last trimester of gestation having shown no previous clinical signs. Following abortion the animal will often recover normally unless the foetus is retained and metritis will develop.
Additionally Listeriosis can also manifest as conjunctivitis when infected silage come in contact with the animals eye, pneumonia, myocarditis and endocarditis.
Additionally Listeriosis can also manifest as conjunctivitis when infected silage come in contact with the animals eye, pneumonia, myocarditis and endocarditis.