Septic Arthritis Caused by Chryseobacterium meningosepticum
Chryseobacterium meningosepticum is a Gram-negative bacillus historically associated with meningitis and sepsis in premature neonates. Clinicians should suspect this organism when Gram-negative bacilli are seen on Gram-stain and culture, particularly in immunocompromised patients, and in cases of disrupted host tissue integrity. We report the first case of septic arthritis due to this organism.

Chryseobacterium meningosepticum, formerly known as Flavobacterium meningosepticum, rarely causes infection in adults. The organism is resistant to multiple antibiotics and is a ubiquitous Gram-negative bacillus historically associated with meningitis and sepsis in premature neonates. This is the first reported case of septic arthritis caused by this pathogen.