The Association for Professionals in Infection Control (APIC) have published the results of a study looking at Clostridium difficile in inpatient facilities. Data shows that 13 out of every 1,000 inpatients in the survey were either infected or colonised with C. difficile (94.4% infected). This rate is 6.5-20 times higher than previous incidence estimates that were more limited in scope (one hospital or hospitals in one state and used different methodologies). You can find the results of this interesting piece of work here.