First description of Anaerococcus octavius as cause of bacteremia.

Anaerococcus spp. are Gram-positive anaerobic cocci involved in human skin and soft-tissue infections, among other diseases. We report the first known case of bacteremia due to A. octavius, detected in an elderly patient. A 71-year-old woman with a history of breast cancer presented with fever and cognitive impairment for more than three days. A. octavius was isolated in blood cultures, and only resistance to clindamycin was reported. Her general condition improved after treatment with metronidazole and she was discharged.