Y.enterocolitica on Endo agar. Colonies are quit small (compare with E.coli and Salmonella)
Cultivation 24 hours, 37°C.
Yersinia enterocolitica infection causes the disease yersiniosis which is a zoonotic disease occurring in humans as well as a wide array of animals such as cattle, deer, pigs, and birds. Acute infections usually lead to mild self-limiting enterocolitis or terminal ileitis in humans. Symptoms may include watery or bloody diarrhea and fever. After oral uptake yersiniae replicate in the terminal ileum and invade Peyer's patches. From here yersiniae can disseminate further to mesenteric lymph nodes causing lymphadenopathy. Ths condition can be confused with appendicitis and is therefore called pseudoappendicitis.