Tyzzer's disease is an acute epizootic bacterial disease found in rodents, rabbits, dogs, cats, birds, pandas, deer, foals, cattle, and other mammals including gerbils[1] and spinifex hopping-mice (Notomys alexis).[2] It is caused by the spore-forming bacterium Clostridium piliforme, formerly known as Bacillus piliformis.[3] It is an infectious disease characterized by necrotic lesions on the liver, is usually fatal, and is present worldwide.[1] Animals with the disease become infected through oral ingestion of the bacterial spores and usually die within a matter of days.[4] Animals most commonly affected include young, stressed animals in laboratory environments, such as immature rodents and rabbits.[1] Most commonly affected wild animals include muskrats (Ondatra zibethicus) and occasionally cottontail rabbits (Sylvilagus spp.).[5] Even today, much remains unknown about Tyzzer's disease, including how and why it occurs.[6]
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