Definition: A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that require SERUM; ASCITIC FLUID; or BLOOD for growth. Its organisms inhabit the THROAT; and NASOPHARYNX of wild and laboratory rats and cause one form of RAT-BITE FEVER in man.
infection: coord IM with FUSOBACTERIUM INFECTIONS (IM) or RAT-BITE FEVER (IM) (see MeSH definition)