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MediumInfectious DiseasesClostridioides difficile Infectionus-abfmus-abimus-usmle-step-2us-usmle-step-3

A 66-year-old hospitalized patient develops watery diarrhea after 8 days of clindamycin. WBC 12,000/µL, creatinine 1.1 mg/dL; stool NAAT positive for C. difficile. What is the preferred initial therapy?

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