Aggregative Adherence Fimbriae I (AAF I) causes aggregation of the bacterial cells. These aggregate on small intestinal cells and cause mucous secretion which produces a biofilm. Enteroaggregative heat stabile toxin is an STa like toxin, and plasmid encoded toxin can also be present.
1 Umbilical hernia is a bulge around the belly button. It occurs when the muscle around the belly button does not close completely after birth.  Inguinal hernia is a bulge in the groin. It is more common in men.
Umbilical hernias. Umbilical hernias occur when fatty tissue or a part of your bowel pokes through your abdomen near your belly button (navel). This type of hernia can occur in babies if the opening in the abdomen through which the umbilical cord passes doesn't seal properly after birth. Adults can also be affected, possibly as a result of repeated strain on the abdomen.