Capnocytophaga sputigena is an unusual cause of community-acquired pneumonia. A 22-year-old woman presented an amoxicillin-resistant pneumonia. Sputum examination detected C. sputigena from 3 specimens with a significant bacterial load. The strain produced beta lactamase. Evolution was favorable after introduction of amoxicillin-clavulanate acid. Physicians might be aware of the presence of this unusual bacterium in cases of community-acquired pneumonia. Keywords: Community-acquired pneumonia, Capnocytophaga sputigena
