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.
If the hernia bulge does not flatten when you lie down, the contents of the hernia may be trapped. This type of hernia can cause blockage of the intestines. If the intestines are tightly trapped, the blood supply to the gut can get blocked and the intestines can die (i.e. become gangrenous).