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Listeriosis in Goats

Listeriosis is caused by the bacteria Listeria monocytogenes, which is found in soil, water, plant litter, silage, and even in the goat's digestive tract. The bacteria is known to multiply well in cold temperatures. There are two forms of Listeriosis: one form results in abortions, while the other causes encephalitis. Both types are seldom seen simultaneously in the same herd. The organism can be shed in the milk of both carrier and sick goats. Its zoonotic potential (ability to be transmitted to humans) is of growing concern. Like Goat Polio, Listeriosis is most often seen in intensive management situations.

Listeriosis, goat. Courtesy of Dr. Thomas Lane

Additional information

Bacterial infection with Listeria monocytogenes which can give microabcesses in the brainstem.

Lesions of listerial encephalitis (microabscessation) in the midbrain of a cow. Courtesy of the Department of Pathobiology, University of Guelph
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