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HardInfectious DiseasesC. difficile (Recurrence Prevention)us-abimus-usmle-step-3

A 55‑year‑old woman with diarrhea and fever has WBC 18,000/µL and serum creatinine 1.4 (baseline 0.7) with positive C. difficile NAAT. What adjunct reduces recurrence risk in high‑risk patients when added to standard therapy?

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