Clostridioides difficile infection is spread by bacterial spores found within feces.[1] Surfaces may become contaminated with the spores with further spread occurring via the hands of healthcare workers.[1] Risk factors for infection include antibiotic or proton pump inhibitor use, hospitalization, hypoalbuminemia,[8] other health problems, and older age.[1] Diagnosis is by stool culture or testing for the bacteria's DNA or toxins.[1] If a person tests positive but has no symptoms, the condition is known as C. difficilecolonization rather than an infection.[1]
Prevention efforts include terminal room cleaning in hospitals, limiting antibiotic use, and handwashing campaigns in hospitals.[2]Alcohol based hand sanitizer does not appear effective.[2] Discontinuation of antibiotics may result in resolution of symptoms within three days in about 20% of those infected.[1]
The antibiotics metronidazole, vancomycin, or fidaxomicin, will cure the infection.[1][3] Retesting after treatment, as long as the symptoms have resolved, is not recommended, as a person may often remain colonized.[1] Recurrences have been reported in up to 25% of people.[9] Some tentative evidence indicates fecal microbiota transplantation and probiotics may decrease the risk of recurrence.[2][10]
C. difficile infections occur in all areas of the world.[11] About 453,000 cases occurred in the United States in 2011, resulting in 29,000 deaths.[2][4] Global rates of disease increased between 2001 and 2016.[2][11]C. difficile infections occur more often in women than men.[2] The bacterium was discovered in 1935 and found to be disease-causing in 1978.[11] Attributable costs for Clostridioides difficile infection in hospitalized adults range from
$4500 to $15,000.[12] In the United States, healthcare-associated infections increase the cost of care by US$1.5 billion each year.[13] Although C. difficile is a common healthcare-associated infection, at most 30% of infections are transmitted within hospitals.[14] The majority of infections are acquired outside of hospitals, where medications and a recent history of diarrheal illnesses (e.g. laxative abuse or food poisoning due to Salmonellosis) are thought to drive the risk of colonization.[15]
^ abcdefghijButler M, Olson A, Drekonja D, Shaukat A, Schwehr N, Shippee N, et al. (March 2016). "Early Diagnosis, Prevention, and Treatment of Clostridium difficile: Update". AHRQ Comparative Effectiveness Reviews.: vi, 1. PMID27148613.