Although infected patients were significantly more likely to contaminate their immediate environment, excretors also disseminated spores widely. In this study C. difficile was isolated from the rooms of a third of patients. This is important since the hospital environment plays a significant role in transmission of C. difficile9,10 and it has been shown that occupants of a room vacated by a previously colonized or infected patient are at increased risk of infection. Infection Control & Hospital Epidemiology. 2015 Aug 1;36(08):975-7.