Peritoneal dialysis-related peritonitis caused by Gemella morbillorum in a patient with systemic lupus erythematosus receiving steroid therapy.

Gemella morbillorum, a Gram-positive coccus, is a natural inhabitant of the human oropharyngeal, upper respiratory and gastrointestinal tracts. Human infections caused by this organism are rare. We describe a case of peritoneal dialysis-related peritonitis due to G. morbillorum in a patient with systemic lupus erythematosus receiving steroid therapy. The patient responded well to antibiotics, without removal of the peritoneal catheter.