sneathia sanguinegens sneathia sanguinegens sneathia sanguinegens is a gram-positive and anaerobic bacterium from the genus of sneathia which has been isolated from humans. sneathia sanguinegens scientific classification domain: bacteria phylum: fusobacteriota class: fusobacteriia order: fusobacteriales family: leptotrichiaceae genus: sneathia species: s. sanguinegens binomial name sneathia sanguinegens(hanff et al. 1995) collins et al. 2002 type strain ccug 41628, cip 106906, dsm 22970 synonyms leptotrichia microbii, leptotrichia sanguinegens