C. diff (Clostridioides difficile)
Clostridioides difficile [klos–TRID–e–OY-dees dif–uh–SEEL] is formerly known as Clostridium difficile and often called C. difficile or C. diff.
C. diff is a germ (bacterium) that causes severe diarrhea and colitis (an inflammation of the colon).
Most cases of C. diff infection occur while you’re taking antibiotics or not long after you’ve finished taking antibiotics.
C. diff can be life-threatening.