E. coli (0157:H7) colitis has a predilection for involvement
of the transverse colon and both ascending/descending colon with right sided predominance. The location of bowel involvement may give clues to the type of infectious colitides.
Typhoid fever (salmonellosis) has a predilection for involving the cecum, ascending colon and invariably in ileum. Shigellosis predominantly affect the descending colon. Campylobacteriosis affect the small bowel and colon.