Final answer:
Enteropathogenic E. coli (EPEC) is a bacterial agent that can cause infantile diarrhea by attaching to intestinal epithelial cells and triggering rearrangement.
Step-by-step explanation:
The etiological agent that causes infantile diarrhea can be bacteria, viruses, or parasites. In the case of infantile diarrhea, one of the main bacterial agents is enteropathogenic E. coli (EPEC). EPEC attaches to the surface of intestinal epithelial cells and triggers rearrangement of the cells. This can lead to severe diarrhea and dehydration in infants.