Species "Bacillus difficilis"

Name: "Bacillus difficilis" Hall and O'Toole 1935

Category: Species

Proposed as: sp. nov.

Etymology: dif.fi’ci.lis. L. masc. adj. difficilis, difficult

Gender: masculine

Nomenclatural type: ATCC 9689; BCRC 10642; CCRC 10642; CCUG 4938; CGMCC 1.2184; CIP 104282; DSM 1296; JCM 1296; LMG 15861; NCIB 10666; NCIMB 10666; NCTC 11209

Conduct genome-based taxonomy at

16S rRNA gene: AB548672 Analyse FASTA

Original publication: Hall IC, O'Toole E. Intestinal flora in newborn infants with a description of a new pathogenic anaerobe, Bacillus difficilis. American Journal of Diseases of Children 1935; 49:390-402.

Nomenclatural status: not validly published, basonym of name in Approved Lists

Taxonomic status: synonym (and no standing)

Correct name: Clostridioides difficile (Hall and O'Toole 1935) Lawson et al. 2016

Risk group: 2

Synonyms:

Name	Kind
Clostridioides difficile (Hall and O'Toole 1935) Lawson et al. 2016	homotypic synonym, validly published under the ICNP
Clostridium difficile (Hall and O'Toole 1935) Prévot 1938 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
"Peptoclostridium difficile" (Hall and O'Toole 1935) Yutin and Galperin 2013	homotypic synonym, not validly published

Notes:
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - human: T - 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". — 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.

Parent taxon: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Hall IC, O'Toole E. Intestinal flora in newborn infants with a description of a new pathogenic anaerobe, Bacillus difficilis. American Journal of Diseases of Children 1935; 49:390-402.

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Record number: 4150

This LPSN page was printed on 2025-05-19 08:10:19

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Species "Bacillus difficilis"