Name: Klebsiella variicola Rosenblueth et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: va.ri.i’co.la. L. masc. adj. varius, different, differing, various; L. masc./fem. n. suff. -cola, inhabitant, dweller; from L. masc./fem. n. incola, dweller; N.L. masc./fem. n. variicola, inhabitant of different places

Pronunciation, gender: wa-ri-I-ko-la, feminine

Type strain: ATCC BAA-830; CFNE 2004; DSM 15968; F2R9

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ783916 Analyse FASTA

Effective publication: Rosenblueth M, Martinez L, Silva J, Martinez-Romero E. Klebsiella variicola, a novel species with clinical and plant-associated isolates. Syst Appl Microbiol 2004; 27:27-35.

IJSEM list: Euzeby JP. Validation list no. 97. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:631-632.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    Klebsiella singaporensis Li et al. 2004	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Brisse et al. (2014), this species is an earlier heterotypic synonym of Klebsiella singaporensis Li et al. 2004. Publication: Brisse S, Passet V, Grimont PA. Description of Klebsiella quasipneumoniae sp. nov., isolated from human infections, with two subspecies, Klebsiella quasipneumoniae subsp. quasipneumoniae subsp. nov. and Klebsiella quasipneumoniae subsp. similipneumoniae subsp. nov., and demonstration that Klebsiella singaporensis is a junior heterotypic synonym of Klebsiella variicola. Int J Syst Evol Microbiol 2014; 64:3146-3152.
  • 🧬 The phylogenomic assignment score of this taxon is 0.09441 (N = 30).
  • 😷 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 = "default: 2 Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2; 137: 1 Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 272 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: 2
Total number of child taxa: 3

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Klebsiella variicola subsp. tropica corrig. Rodrigues et al. 2019	validly published under the ICNP	correct name
    Klebsiella variicola subsp. tropicalensis Rodrigues et al. 2019	inaccurate spelling	misspelling
    Klebsiella variicola subsp. variicola (Rosenblueth et al. 2004) Rodrigues et al. 2019	validly published under the ICNP	correct name

Parent taxon: Klebsiella Trevisan 1885 (Approved Lists 1980)

Assigned by: Rosenblueth M, Martinez L, Silva J, Martinez-Romero E. Klebsiella variicola, a novel species with clinical and plant-associated isolates. Syst Appl Microbiol 2004; 27:27-35.

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Record number: 777159