yer·sin·i·o·sis | \ yər-ˌsin-ē-ˈō-səs 
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\Medical Definition of yersiniosis
: infection with or disease caused by a bacterium of the genus Yersinia (as Y. pseudotuberculosis) especially : an infectious disease that is caused by a yersinia (Y. enterocolitica) transmitted chiefly in contaminated water and food (as raw or undercooked pork products) and is marked especially by fever, abdominal pain, and diarrhea
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