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===Yersiniosis (Pseudotuberculosis)===

===Yersiniosis (Pseudotuberculosis)===

''Yersinia pseudotuberculosis'' is usually the result of fecal contamination of food or water and leads to acute septicemia and intermittent diarrhoea.  

[[Yersinia_pseudotuberculosis|''Yersinia pseudotuberculosis'']] is usually the result of fecal contamination of food or water and leads to acute septicemia and intermittent diarrhoea.  

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Macroscopic pathology includes lesions in the mesenteric lymph nodes, spleen, liver, lungs, gallbladder and intestinal walls.

Macroscopic pathology includes lesions in the mesenteric lymph nodes, spleen, liver, lungs, gallbladder and intestinal walls.

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===Cholangiofibrosis===

===Cholangiofibrosis===

Also called cholangiohepatitis, the cause of this pathology is thought to be from a Helicobacter species called ''H. cholecysticus''. Affected hamsters display no clinical signs.

Also called cholangiohepatitis, the cause of this pathology is thought to be from a Helicobacter species called ''H. cholecysticus''. Affected hamsters display no clinical signs.