prevotella albensis prevotella albensis prevotella albensis, previously known as bacteroides ruminicola subsp. ruminicola, is a species of bacterium. prevotella albensis scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: prevotellaceae genus: prevotella species: p. albensis binomial name prevotella albensisavgustin et al. 1997 prevotella species are part of the human oral and vaginal flora. they play a role in the pathogenesis of periodontal disease, gingivitis, extraoral and some odontogenic infections, and strains are usually carried in families, in so-called intrafamilial carriage. it is also associated with carotid atherosclerosis.