Goat with Listeria Monocytogenes
Today we hade the opportunity to see a goat in the clinic wich was badly infected with L. Monocytogenes. It was 3 days since the initiation of the clinical signs and the goat was severely paralyzed - could´t stand up. The right half of the face was paralyzed – ear haning, eye closed, tongue out and food left in mouth etc and the neck was bendt all the way to the right and tremors were present. It was terrible to see, but interesting at the same time.
Earlier clinical signs are walking in circles -neurological.
L. monocytogenes may invade the gastrointestinal epithelium. Once the bacterium enters the host’s monocytes, macrophages, or polymorphonuclear leukocytes, it becomes blood-borne (septicemic) and can grow. Its presence intracellularly in phagocytic cells also permits access to the brain and probably transplacental migration to the fetus in pregnant women. The pathogenesis of L. monocytogenes centers on its ability to survive and multiply in phagocytic host cells.
The manifestations of listeriosis include septicemia, meningitis, encephalitis, corneal ulcer, pneumonia, spontaneous abortion or stillbirth.
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