Name: Cronobacter muytjensii Iversen et al. 2008

Category: Species

Proposed as: sp. nov.

Etymology: muyt.jen’si.i. N.L. gen. masc. n. muytjensii, of Muytjens, named in honour of the Dutch microbiologist Harry Muytjens, who performed much of the early work on [Enterobacter] sakazakii

Pronunciation (Latin), gender: kro-no-BAK-ter muyt-JEN-si-i, masculine

Type strain: ATCC 51329; CIP 103581; DSM 21870

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: GU122217 Analyse FASTA

Valid publication: Iversen C, Mullane N, McCardell B, Tall BD, Lehner A, Fanning S, Stephan R, Joosten H. Cronobacter gen. nov., a new genus to accommodate the biogroups of Enterobacter sakazakii, and proposal of Cronobacter sakazakii gen. nov., comb. nov., Cronobacter malonaticus sp. nov., Cronobacter turicensis sp. nov., Cronobacter muytjensii sp. nov., Cronobacter dublinensis sp. nov., Cronobacter genomospecies 1, and of three subspecies, Cronobacter dublinensis subsp. dublinensis subsp. nov., Cronobacter dublinensis subsp. lausannensis subsp. nov. and Cronobacter dublinensis subsp. lactaridi subsp. nov. Int J Syst Evol Microbiol 2008; 58:1442-1447. 🇨🇭

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 6 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:1995-1996.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    "Cronobacter muytjensii" Iversen et al. 2007	homotypic synonym, not validly published

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.10653 (N = 27).
  • 😷 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 42 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.
  • 🧍 Cronobacter muytjensii Iversen et al. 2008 was previously known as "Cronobacter muytjensii" Iversen et al. 2007. Publication: Iversen C, Lehner A, Mullane N, Bidlas E, Cleenwerck I, Marugg J, Fanning S, Stephan R, Joosten H. The taxonomy of Enterobacter sakazakii: proposal of a new genus Cronobacter gen. nov. and descriptions of Cronobacter sakazakii comb. nov. Cronobacter sakazakii subsp. sakazakii, comb. nov., Cronobacter sakazakii subsp. malonaticus subsp. nov., Cronobacter turicensis sp. nov., Cronobacter muytjensii sp. nov., Cronobacter dublinensis sp. nov. and Cronobacter genomospecies 1. BMC Evol Biol 2007; 7:64. 🇨🇭

Parent taxon: Cronobacter Iversen et al. 2008

Assigned by: Iversen C, Mullane N, McCardell B, Tall BD, Lehner A, Fanning S, Stephan R, Joosten H. Cronobacter gen. nov., a new genus to accommodate the biogroups of Enterobacter sakazakii, and proposal of Cronobacter sakazakii gen. nov., comb. nov., Cronobacter malonaticus sp. nov., Cronobacter turicensis sp. nov., Cronobacter muytjensii sp. nov., Cronobacter dublinensis sp. nov., Cronobacter genomospecies 1, and of three subspecies, Cronobacter dublinensis subsp. dublinensis subsp. nov., Cronobacter dublinensis subsp. lausannensis subsp. nov. and Cronobacter dublinensis subsp. lactaridi subsp. nov. Int J Syst Evol Microbiol 2008; 58:1442-1447. 🇨🇭

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Record number: 787375