The Correct Answer is E
Explanation:
The presence of large numbers of leukocytes in stool is diagnostic of colonic mucosal inflammation and should suggest infection with enteroinvasive organisms such as Shigella, E. histolytica, Salmonella, Campylobacter, invasive Escherichia coli, or Y. enterocolitica. Those organisms that cause diarrhea by a noninvasive mechanism (Giardia lamblia, enterotoxigenic E. coli, Vibrio cholerae) are not associated with leukocytes in the stool.
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