Bacteroides fragilis
| Bacteroides fragilis | |
|---|---|
| Scientific classification | |
| Domain: | Bacteria | 
| Kingdom: | Pseudomonadati | 
| Phylum: | Bacteroidota | 
| Class: | Bacteroidia | 
| Order: | Bacteroidales | 
| Family: | Bacteroidaceae | 
| Genus: | Bacteroides | 
| Species: | B. fragilis | 
| Binomial name | |
| Bacteroides fragilis (Veillon and Zuber 1898) Castellani and Chalmers 1919 (Approved Lists 1980) | |
Bacteroides fragilis is an anaerobic, Gram-negative, pleomorphic to rod-shaped bacterium. It is part of the normal microbiota of the human colon and is generally commensal, but can cause infection if displaced into the bloodstream or surrounding tissue following surgery, disease, or trauma.