C. diff (Clostridium difficile) may be a normal part of a person's intestinal flora. C. diff Colitis occurs when overuse of antibiotics wipes out competing bacteria, allowing antibiotic resistant C. Diff to overpopulate. C-diff Colititis is a common hospital-spread disease, it is spread through the fecal oral route in cramped areas like hospitals due to insufficient cleanliness. A hospital in North Staffordshire recently had 28 patients affected with the disease a similar outbreak in a hospital in Nanaimo, Canada has led to the deaths of at least three patients. The Irish Health Protection Surveillance Centre reports a drop in C. diff figures. Meanwhile Researchers at New York Hospital's Queens-Weill Cornell Medical College report that C. diff infection is aggravated by low vitamin D levels.