Enteroinvasive Escherichia coli (EIEC) is a type of pathogenic bacteria whose infection causes a syndrome that is identical to shigellosis, with profuse diarrhea and high fever.

They produce no toxins,[citation needed] but severely damage the intestinal wall through mechanical cell destruction.

In addition, the plasmid of the strain carries genes for a type III secretion system that is used as the virulent factor.

The illness is characterized by the appearance of blood and mucus in the stools of infected individuals or a condition called colitis.

The illness is characterized by abdominal cramps, diarrhea, vomiting, fever, chills, and a generalized malaise.