Fusobacterium nucleatum
Bacteria|Fusobacteriota|Fusobacteriia|Fusobacteriales|Fusobacteriaceae|Fusobacterium
Synonyms: Fusobacterium fusiforme; Fusobacterium plauti-vincenti
MCA-BAC-000019
TaxID: 851
| Rank: species
Biology & Ecology
Biology
Gram Statusgram-negative
Oxygen Toleranceobligate anaerobe
Morphologybacillus (rod)
Key Traits
- biofilm-forming
Ecology
Primary Nichesoral cavity
Reservoirhuman
Transmission
- oral-gut translocation (oral-to-gut; facilitated by Fn resistance to acidic pH and OMV-mediated systemic dissemination)
Clinical Profile
Pathobiont
yes
no
context dependent
unknown
Clinical Rolesbiofilm former; coloniser; commensal; primary pathogen
Typical Specimenbiopsy; stool; unknown
Bloom Triggers
antibiotic exposure
Risk Contextscolorectal cancer; inflammatory bowel disease (IBD); periodontitis patients; rheumatoid arthritis
AMR Highlights
unknown
Clinical Associations:
No specific clinical associations documented.
Last reviewed: 2026-04-01
Evidence Timeline
Related Taxa
Shared Niche = same body site
Shared Risk = same vulnerable population
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