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stable enterotoxins (ST), or to Shigella-like
invasiveness. The serotypes included in
Yersinia enterocolitica
EPEC are O55, O86, O111ab, O119, O125ac,
o126, and others. Yersinia enterocolitica is a Gram-negative,
DAEC or diffusely adherent E. coli have facultative anaerobic, non-spore-forming
been associated with diarrhea in children in bacterium; it is sucrose-positive, rhamnose-
Mexico and can produce mild diarrhea negative, indole-positive, motile at 20°C but
without blood or fecal leukocytes. not at 37°C, and highly virulent to mice.
A comprehensive treatment of E. coli Serotyping is very important in separating
O157 : H7 and other E. coli strains, as well as this organism from other closely related
many food-borne pathogens, can be found in Gram-negative bacteria. Although Y. entero-