Clostridium difficile spreads through feces, food, objects and surfaces that have the bacteria, explains Mayo Clinic. It spreads when people do not practice proper hygiene, when they do not wash their hands or clean the surfaces and objects around them.
When an infected person uses the bathroom and does not wash his hands, he may leave the bacteria in the area when he touches the doorknob or any other surface, states WebMD. Spores of this bacteria can survive in a room for weeks or months, says Mayo Clinic. When another person touches an infected surface and does not wash his hands, he is likely to consume the bacteria unknowingly. People who take antibiotics have a higher risk of contracting this disease because the antibiotics kill good bacteria in their intestines and allow Clostridium difficile bacteria to thrive.