Both Oral Metronidazole and Oral Vancomycin Promote Persistent Overgrowth of Vancomycin-Resistant Enterococci during Treatment of Clostridium difficile-Associated Disease

Wafa N. Al-Nassir, Ajay K. Sethi, Yuejin Li, Michael J. Pultz, Michelle M. Riggs and Curtis J. Donskey

Antimicrobial Agents and Chemotherapy 52 ( 7 ): 2403 - 2406 , 2008