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Yersinia enterocolitica

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A gram-negative coccoid non spore forming and facultative anaerobic bacterium involved in various infections caused by the consumption of undercooked meat or contaminated water.


Yersinia enterocolitica is a small rod-shaped often isolated from clinical specimens including feces, sputum, wounds and mesenteric lymph nodes.

Yersinia enterocolitica is common in nature occurring in reservoirs ranging from the intestinal tracts of numerous mammals, cold-blooded species, and avian species. It is isolated from the environment including lakes, ponds and water system as well as in food sources such as meat, ice cream and dairy products which mostly found to be pathogenic.

Yersinia enterocolitica is implicated in enterocolitis, mesenteric lymphadenitis, terminal ileitis and pseudoappendicitis as well as in acute diarrhea and fatal sepsis. It is able to enter in the gastrointestinal tract transmitted from uncooked pork, meat, milk and contaminated water which lead from mild to terminal infections in human manifested with bloody or watery diarrhea, fever, resembling appendicitis, salmonellosis and shigellosis.

Scientific classification:

Kingdom: Bacteria

Phylum: Proteobacteria

Class: Gamma Proteobacteria

Order: Enterobacteriales

Family: Enterobacteriaceae

Genus: Yersinia

Species: Yersinia enterocolitica

See also:

• Bacteria

• Enterocolitis