Daily Bolus of LR: Yersinia

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January 31, 2012 by dailybolusoflr

Yersinia

* Is a common cause of bacterial enteritis
* Is transmitted by ingested contaminated food and water, in particular undercooked meat (pork) or unpasterurized milk or contaminated water. Less commonly transmitted by fecal-oral contamination.
* Is a gram negative coccobaccilus
* Is known for its mimicking of appendicitis when patients are actually afflicted with mesenteric lymphadenitis or inflammation of the terminal ileum. History often notes a longer course of days to weeks in these patients versus those with appendicitis.
* Infants and children are most commonly affected
* Associated disease presentations: reactive polyarthritis and erythema nodosum

ref: Infectious Disease Clinics of North America<http://www.mdconsult.com/das/clinicslist/view/315244371-4/home/0891-5520/0?issn=0891-5520> Dec 2010. Vol 24: 4

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