Etymology:
fra’gi.lis. L. masc. adj.fragilis, easily broken, brittle, fragile (relating to the brittle colonies that may form under some culture conditions)
homotypic synonym, not validly published, basonym of name in Approved Lists
Emendations:
Hahnke et al. 2016
Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003.
Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.
⏰ According to Committee (2025), this species is an earlier heterotypic synonym of "Bacteroideshominis" Afrizal et al. 2022.Publication:
Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
⏰ According to Committee (2025), this species is an earlier heterotypic synonym of Bacteroideshominis Liu et al. 2022.Publication:
Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - biological class of risk animal: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "TA". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — The risk group for France has been imported on 2024-08-30. The full classification is: risk group = 2. — The risk group for Sweden has been imported on 2024-02-05. The full classification is: risk group = 2. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — The risk group for United Kingdom has been imported on 2024-01-31. The full classification is: risk group = 2. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
🎓 Name mentioned 5572 times in PubMed until 2025-06-04.
🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
⚠ This name is retained (and recommended for medical use. This will change in the future) instead of Bacteroideshominis Liu et al. 2022.Publication:
Liu C, Du MX, Abuduaini R, Yu HY, Li DH, Wang YJ, Zhou N, Jiang MZ, Niu PX, Han SS, et al. Enlightening the taxonomy darkness of human gut microbiomes with a cultured biobank. Microbiome 2021; 9:119.
Oren A, Garrity GM. Validation list no. 205. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2022; 72:5331.
🧍 According to Bartlett et al. (2022), this species is an established human pathogen.Publication:
Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology 2022; 168:0.
🧍 The phylogenetic position of this species was determined in a genome-scale analysis by García-López et al. (2019).Publication:
Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.
Subdivision:
Number of child taxa with a validly published and correct name: 0 Number of child taxa with a validly published name, including synonyms: 0 Total number of child taxa: 2