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The opossum passes the parasite through feces. Horses contract EPM from contaminated feed or water. Horses cannot pass the disease among themselves; that is, one horse cannot contract the disease from another infected horse. The horse is a dead-end, or aberrant, host of the parasite.
Spores of C. novyi escape from the gut and lodge in the liver, where they remain dormant until some injury creates anaerobic conditions for them to germinate, causing local necrosis and widespread damage to the microvascular system, resulting in subcutaneous bleeding and blackening of the skin, hence the common name "black disease".
Potomac Horse Fever (PHF) is a potentially-fatal febrile illness affecting horses caused by the intracellular bacterium Neorickettsia risticii. PHF is also known as Shasta River Crud and Equine Monocytic Ehrlichiosis .
In sheep, the disease is also called "circling disease". [4] The most obvious signs for the veterinarians are neurological, especially lateral deviation of the neck and head, opisthotonus or emprosthotonus. Other signs comprises compulsive movements of the lips, facial and masticatory muscles, with food staying in mouth.
DELAWARE, Ohio (WCMH) – Central Ohio residents have been reporting more cases of distemper in wildlife, with officials recommending pet owners vaccinate their pets against the highly contagious ...
DENVER (Reuters) -An unknown and highly contagious disease has killed 85 wild horses in less than a week at a federal corral in Colorado, officials said on Wednesday, revising the number upward ...
The illness, called blastomycosis, can be difficult to diagnose, in part because it can resemble other respiratory infections. And the longer it goes undiagnosed, the more difficult it is to treat .
Severe biting stress to cattle, sheep and horses is caused. Horses suffer from a cutaneous hypersensitivity reaction called sweet-itch, or Queensland-itch that is caused by antigenic components of saliva of biting midges. [19] [20] Poultry may be severely afflicted with biting stress.