Enterococcus casseliflavus

Enterococcus casseliflavus is a species of commensal Gram-positive bacteria. Its name derived from the "flavus" the Latin word for yellow due to the bright yellow pigment that it produces. This organism can be found in the gastrointestinal tract of humans

The most common form of E. casseliflavus infection is bacteremia. A study evaluating cases of E. casseliflavus bacteremia found that malignancy and diabetes mellitus were the most common complications, suggesting that a compromised immune system may be a risk factor for developing E. casseliflavus bacteremia. Several cases of bacteremia have been attributed to prior infection or surgery on the biliary tract and liver, suggesting that E. casseliflavus has a high affiliation for these organs.

E. casseliflavus has also been reported to cause endophthalmitis.