Bacteroides

• Genus of anaerobic Gram-negative bacillus
• Non-spore-forming
• Clinically relevant species include:
  • Bacteroides fragilis (most common)
  • Bacteroides thetaiotaomicron
  • Bacteroides vulgatus
  • Bacteroides ovatus
  • Bacteroides distasonis
  • Bacteroides uniformis
  • Many others
• Most commonly associated with GI-related infections