Task: Answer Verification
Input (English): Question: Is the prevalence of intestinal parasites greater among individuals with irritable bowel syndrome : a population-based case-control study?
Answer: D fragilis and Blastocystis were detected in a greater proportion of fecal samples from the asymptomatic background population in Denmark than from subjects with IBS symptoms. These findings indicate that these parasites are not likely to have a direct role in the pathogenesis of IBS. Longitudinal studies are required to understand their role in gastrointestinal health.
Output (English): no