Parvimonas micra

Background

• Gram-positive anaerobic coccus
• Commensal member of the gut microbiota, occasionally urogenital tract and skin

Clinical Manifestations

• Chronic apical periodontitis
• Bacteremia1
  • Can be from discitis (30%), oropharyngeal infection (25%), intraabdominal abscess (15%), GI tract infection (10%), endocarditis (10%), and septic pulmonary emboli (10%)
  • Up to half have polymicrobial bacteremia
• May also be involved in meningitis, brain abscess, and neck abscess

Management

• Fairly susceptible, including to penicillin, piperacillin-tazobactam, meropenem, clindamycin