Brain abscess caused by Gemella morbillorum: case report and review of the literature.

We describe a rare case of cerebral abscess in an immunocompetent 67-year-old male with Gemella morbillorum as the causative agent. Gemella morbillorum is an aerobic gram positive coccus and is deemed to be a normal inhabitant of the oral cavity. The aim of this report is to introduce Gemella morbillorum as the emerging pathogen involved in brain abscesses. To the best of our knowledge only eight cases of Gemella morbillorum brain abscess have been reported in the literature. An exhaustive review of the literature is included with emphasis on the primary source of infection, clinical presentation, radiological diagnosis, and treatment modalities.