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Colonization results for groups of 10 hamsters treated with fidaxomicin (A) and vancomycin (B) and groups of 2 untreated control hamsters. Open ovals indicated no C. difficile growth in the fecal pellets. Solid color ovals indicated positive fecal cultures for C. difficile. One control hamster in the second control group died on day 30 during an environmental problem in the animal facility.
