How does c. Difficile spread?  

Fomites. C. Diff is more common in the hospitals and nursing homes and is usually spread by not washing your hands properly. Those who carry that bacteria may not be sick but still my pass the bacteria person to person or through objects such as doorknobs, tv remotes, handles, etc.
Spore ingestion. C. Difficile is spread by ingestion of spores of the organism that are present in the environment. These spores are excreted in the stool of colonized or infected persons. Prevention in hospitals is by contact isolation in a private room, terminal room disinfection and hand hygene with soap and water(not hand sanitizer).