Dear Anonymous,
I have not personally experienced Clostridium difficile infection, however a good friend has...as you will no doubt already know, it is more common in the elderly. And for my friend, the chronic diarrhea was devastating.
Her condition was eventually controlled through antibiotics and careful nutrition, but only after many recurrences. And she was strong and healthy when she got infected - from an inadequately sterilized, routine colonoscopy.
And in the USA 2011, of the half million people similarly infected, 29,000 died within thirty days of diagnosis.
http://www.cdc.gov/HAI/organisms/cdiff/Cdiff_infect.html
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Canadian TV CBC had a segment on C. diff. some years back, and one highly promising treatment was fecal transplant; collecting gut flora from a healthy person, perhaps a relative, and infusing it into the GI tract of the sick person...there were some remarkable recoveries.