Butyricimonas faecihominis and Eubacterium callanderi mixed bloodstream infection after appendicular peritonitis.

• Bowel tract pathologies appear to facilitate bloodstream infection caused by anaerobic bacteria. • Due to their difficult identification, Eubacterium spp. and Butyricimonas spp are probably under-reported human pathogens. • Expansion of the MALDI-TOF MS database is mandatory for accurate identification of uncommon bacteria. [ABSTRACT FROM AUTHOR]