Name: Enterobacter intermedius corrig. Izard et al. 1980

Category: Species

Proposed as: sp. nov.

Etymology: in.ter.me’di.us. L. masc. adj. intermedius, that is between, intermediate

Gender: masculine

Type strain: ATCC 33110; CCUG 14183; CIP 79.27; CUETM 77-130; DSM 4581; Gavini E 86; HAMBI 1299; JCM 1238; LMG 2785; NBRC 102594; NCTC 12125

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB681871 Analyse FASTA

Effective publication: Izard D, Gavini F, Leclerc H. Polynucleotide sequence relatedness and genome size among Enterobacter intermedium sp. nov. and the species Enterobacter cloacae and Klebsiella pneumoniae. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. Reihe C 1980; 1:51-60.

IJSEM list: Anonymous. Validation list no. 4. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1980; 30:601.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Kluyvera intermedia (Izard et al. 1980) Pavan et al. 2005

Risk group: 2

• Synonyms:

  • Name	Kind
    Enterobacter intermedium Izard et al. 1980	other spelling of name, inaccurate spelling
    Kluyvera intermedia (Izard et al. 1980) Pavan et al. 2005	homotypic synonym, validly published under the ICNP
    Kluyvera cochleae Müller et al. 1996	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Pavan et al. (2005), this species is an earlier heterotypic synonym of Kluyvera cochleae Müller et al. 1996. Publication: Pavan ME, Franco RJ, Rodriguez JM, Gadaleta P, Abbott SL, Janda JM, Zorzopulos J. Phylogenetic relationships of the genus Kluyvera: transfer of Enterobacter intermedius Izard et al. 1980 to the genus Kluyvera as Kluyvera intermedia comb. nov. and reclassification of Kluyvera cochleae as a later synonym of K. intermedia. Int J Syst Evol Microbiol 2005; 55:437-442.
  • ❗ Enterobacter intermedius is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Enterobacter.
  • 😷 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 = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 7 times in PubMed until 2024-03-28.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 Nom. corrig.: IJSB 40:211. Publication: von Graevenitz A. Revised nomenclature of Campylobacter laridis, Enterobacter intermedium, and "Flavobacterium branchiophila". Int J Syst Bacteriol 1990; 40:211.
  • 🧍 Enterobacter intermedius corrig. Izard et al. 1980 was previously known as group H1 of Izard et al. Publication: Izard D, Gavini F, Trinel PA, Leclerc H. Etude d'un groupe nouveau d' Enterobacteriaceae (groupe H1) apparenté à l'éspece Enterobacter cloacae. Canad. J. Microbiol. 1979; 25:713-718.
  • 🧍 The original spelling, Enterobacter intermedium (sic), has been corrected by Von Graevenitz 1990. Publication: von Graevenitz A. Revised nomenclature of Campylobacter laridis, Enterobacter intermedium, and "Flavobacterium branchiophila". Int J Syst Bacteriol 1990; 40:211.

Parent taxon: Enterobacter Hormaeche and Edwards 1960 (Approved Lists 1980)

Assigned by: Izard D, Gavini F, Leclerc H. Polynucleotide sequence relatedness and genome size among Enterobacter intermedium sp. nov. and the species Enterobacter cloacae and Klebsiella pneumoniae. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. Reihe C 1980; 1:51-60.

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Record number: 775945