Species ***Mycobacterium* *intracellulare***

Name: Mycobacterium intracellulare corrig. (Cuttino and McCabe 1949) Runyon 1965 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Nocardia intracellularis" Cuttino and McCabe 1949

Etymology: in.tra.cel.lu.la’re. L. adv. intra, within; L. fem. n. cellula, a small store-room and in biology a cell; N.L. neut. adj. suff. -are, suffix denoting pertaining to; N.L. neut. adj. intracellulare, intracellular

Pronunciation (Latin), gender: … in-tra-kel-lu-LA-re, neuter

Type strain: ATCC 13950; CCUG 28005; CIP 104243; DSM 43223; JCM 6384; NCTC 13025; TMC 1406

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ536036 Analyse FASTA

Effective publication: Runyon EH. Pathogenic mycobacteria. Advances in Tuberculosis Research 1965; 14:235-287.

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

Synonyms:

Name	Kind
Mycobacterium paraintracellulare Lee et al. 2016	heterotypic synonym, validly published under the ICNP
"Nocardia intracellularis" Cuttino and McCabe 1949	homotypic synonym, not validly published, basonym of name in Approved Lists
Mycobacterium intracellularis (Cuttino and McCabe 1949) Runyon 1965 (Approved Lists 1980)	other spelling of name, inaccurate spelling

Emendations:
- Castejon et al. 2018 Castejon M, Menendez MC, Comas I, Vicente A, Garcia MJ. Whole-genome sequence analysis of the Mycobacterium avium complex and proposal of the transfer of Mycobacterium yongonense to Mycobacterium intracellulare subsp. yongonense subsp. nov. Int J Syst Evol Microbiol 2018; 68:1998-2005. 🇪🇸 Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 68, part 6 of the IJSEM. Int J Syst Evol Microbiol 2018; 68:2710-2711.

Notes:
- ⏰ According to Nouioui et al. (2018), this species is an earlier heterotypic synonym of Mycobacterium paraintracellulare Lee et al. 2016. Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. 🇩🇪
- 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.
- 😷 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: 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. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 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 952 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.
- 🧍 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. 🇬🇧

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 3
Total number of child taxa: 3

Child taxa:

Name	Nomenclatural status	Taxonomic status
Mycobacterium intracellulare subsp. chimaera (Tortoli et al. 2004) Nouioui et al. 2018	validly published under the ICNP	correct name
Mycobacterium intracellulare subsp. intracellulare (Cuttino and McCabe 1949) Castejon et al. 2018	validly published under the ICNP	correct name
Mycobacterium intracellulare subsp. yongonense (Kim et al. 2013) Castejon et al. 2018	validly published under the ICNP	synonym

Parent taxon: Mycobacterium Lehmann and Neumann 1896 (Approved Lists 1980)

Assigned by: Runyon EH. Pathogenic mycobacteria. Advances in Tuberculosis Research 1965; 14:235-287.

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Record number: 778469

This LPSN page was printed on 2026-03-06 09:26:49

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Species Mycobacterium intracellulare

Species ***Mycobacterium* *intracellulare***