Fusobacterium nucleatum
Scientific classification
Domain:	Bacteria
Phylum:	Fusobacteria
Family:	Fusobacteriaceae
Genus:	Fusobacterium
Species:	nucleatum

Fusobacterium nucleatum is an oral bacterium, indigenous to the human oral cavity, that plays a role in periodontal disease. This organism is commonly recovered from different monomicrobial and mixed infections in humans and animals. It is a key component of periodontal plaque due to its abundance and its ability to coaggregate with other species in the oral cavity.^[1]

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v • d • e Infectious diseases · Bacterial diseases: non-proteobacterial G- (primarily A00-A79, 001-041,080-109) Spirochaete Spirochaetaceae Treponema Treponema pallidum (Syphilis/Bejel, Yaws) · Treponema carateum (Pinta) · Treponema denticola Borrelia Borrelia recurrentis (Relapsing fever) · Borrelia burgdorferi (Lyme disease, Erythema chronicum migrans, Neuroborreliosis) Leptospiraceae Leptospira Leptospira interrogans (Leptospirosis) Spirillaceae Spirillum Spirillum minus (Rat-bite fever/Sodoku) Chlamydiae Chlamydophila Chlamydophila psittaci (Psittacosis) · Chlamydophila pneumoniae Chlamydia Chlamydia trachomatis (Chlamydia, Lymphogranuloma venereum, Trachoma) Bacteroidetes Bacteroides fragilis · Capnocytophaga canimorsus · Porphyromonas gingivalis · Prevotella intermedia · Bacteroides forsythus Fusobacteria Fusobacterium necrophorum (Lemierre's syndrome) · Fusobacterium nucleatum · Fusobacterium polymorphum