 They have been recovered in 15% of patients with chronic mastoiditis.When Peptostreptococci and other anaerobes predominate, aggressive treatment of acute infection can prevent chronic infection.When the risk of anaerobic infection is high, as with intra-abdominal and post-surgical infections, proper antimicrobial prophylaxis may reduce the risk
90% of the time, other organisms were mixed in with the anaerobic gram-positive cocci and microaerophilic streptococci.