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Anaerobic Gram-Negative Bacilli
>Bacteroides fragilis (most important clinically)
[Other Bacteroides species – less common clinically: (B. acidifaciens, B. gracilis,
B. oris, B. ovatus, B. pyogenes , B. stercoris, B. vulgatus)]
>Bacteroides melaninogenicus (reclassified and split into Prevotella melaninogenica
and Prevotella intermedia.)
| Important considerations: The choice of an agent should be based on local antimicrobial sensitivities, site of infection, cost, and comorbid conditions. Generally, the most common agents/regimens are listed first.
Severe cases: consider combination therapy: infections may be polymicrobial, and other organisms can mimic fusobacteriosis. Also MIC/susceptibility testing should generally be performed for all serious infections.