First-line for clostridium difficile, vancomycin or fidaxomicin?

Debate will brew about FIRST-LINE medications for C. difficile based on differing recommendations in new guidelines. Oral metronidazole has fallen out of favour, because it's less effective than vancomycin. The American College of Gastroenterology now recommends either oral vancomycin or fidaxomicin for a first  C. difficile  episode.  In contr…