Species ***Clostridium* *innocuum***

Name: Clostridium innocuum Smith and King 1962 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: in.no’cu.um. L. neut. adj. innocuum, harmless

Pronunciation (Latin), gender: klos-TRI-di-um in-NO-ku-um, neuter

Type strain: ATCC 14501; BCRC 14517; CCRC 14517; CCUG 36763; DSM 1286; JCM 1292; NCIB 10674; NCIMB 10674

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M23732 Analyse FASTA

Effective publication: Smith LD, King E. Clostridium innocuum, sp. n., a sporeforming anaerobe isolated from human infections. J Bacteriol 1962; 83:938-939.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

Notes:
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - 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. — The risk group for Germany has been imported on 2026-08-13. 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 192 times in PubMed until 2026-06-11.
- 🙆 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.
- 🧍 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 (Reading) 2022; 168:0. 🇬🇧
- 🧍 According to Ludwig et al. (2021), this "species may be reclassified among Eryspelotrichaceae and as a new combination or as a new genus". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218. 🇪🇸

Parent taxon: Clostridium Prazmowski 1880 (Approved Lists 1980)

Assigned by: Smith LD, King E. Clostridium innocuum, sp. n., a sporeforming anaerobe isolated from human infections. J Bacteriol 1962; 83:938-939.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.774902Link copied to clipboard

Record number: 774902

This LPSN page was printed on 2026-09-13 07:56:11

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Species Clostridium innocuum

Species ***Clostridium* *innocuum***