C.difficile increases 200% among oldest old over 15 years. CDC Quickstat: “From 1996 to 2009, C. difficile rates for hospitalized persons aged ≥65 years increased 200%, with increases of 175% for those aged 65-74 years, 198% for those aged 75-84 years, and 201% for those aged ≥85 years. C. difficile rates among patients aged ≥85 years were notably higher than those for the other age groups.”
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C.difficile increases 200% among oldest old over 15 years. CDC Quickstat:

“From 1996 to 2009, C. difficile rates for hospitalized persons aged ≥65 years increased 200%, with increases of 175% for those aged 65-74 years, 198% for those aged 75-84 years, and 201% for those aged ≥85 years. C. difficile rates among patients aged ≥85 years were notably higher than those for the other age groups.”

Source: cdc.gov