Infective endocarditis due to Fusobacterium nucleatum in an intravenous drug abuser.

Infective endocarditis due to anaerobic non-spore-forming gram-negative bacilli in intravenous drug abusers is exceedingly rare, with only two cases being previously reported in the literature. A case of endocarditis due to Fusobacterium nucleatum in an intravenous drug abuser is reported, accompanied by a review of the literature.