Incidence and severity of CDI cases are increasing, with approximately 700,000 new cases per year in the United States
1,2,5,6
CDI accounts for significant rates of morbidity and mortality that increase with patient age, with a mortality rate as high as 14% in elderly patients
7
C. difficile is the most common cause of infectious diarrhea in healthcare settings
8
C. difficile-associated diarrhea (CDAD) is the most common symptom of CDI
8
Rising incidence of CDAD attributed to widespread use of broad-spectrum antibiotics
8
Treatment failure rates ranged from 3% to 4% pre-2000, and 3% to 18% post-2000
9
Community-acquired infection threatens populations previously considered to be at low risk
10
Since 2000,
C. difficile epidemiology has evolved to include a hypervirulent strain with possible increased toxin production and sporulation
11-13