Name: Haematobacter missouriensis Helsel et al. 2007

Category: Species

Proposed as: sp. nov.

Etymology: mis.sou.ri.en’sis. N.L. masc. adj. missouriensis, pertaining to Missouri, where the type strain was isolated

Pronunciation (Latin), gender: … mis-sou-ri-EN-sis, masculine

Type strain: CCUG 52307; CIP 109176; H1892

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: DQ342315 Analyse FASTA

Effective publication: Helsel LO, Hollis D, Steigerwalt AG, Morey RE, Jordan J, Aye T, Radosevic J, Jannat-Khah D, Thiry D, Lonsway DR, et al. Identification of "Haematobacter," a new genus of aerobic Gram-negative rods isolated from clinical specimens, and reclassification of Rhodobacter massiliensis as "Haematobacter massiliensis comb. nov.". J Clin Microbiol 2007; 45:1238-1243. 🇺🇸

IJSEM list: Euzeby JP. Validation list no. 116. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2007; 57:1371-1373.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Emendations:
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 🥇 Nomenclatural type of the genus Haematobacter Helsel et al. 2007. Publication: Helsel LO, Hollis D, Steigerwalt AG, Morey RE, Jordan J, Aye T, Radosevic J, Jannat-Khah D, Thiry D, Lonsway DR, et al. Identification of "Haematobacter," a new genus of aerobic Gram-negative rods isolated from clinical specimens, and reclassification of Rhodobacter massiliensis as "Haematobacter massiliensis comb. nov.". J Clin Microbiol 2007; 45:1238-1243. 🇺🇸
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+". — 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 1 time 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 pathogenicity of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is a putative 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. 🇬🇧
  • 🧍 According to the protologues Haematobacter missouriensis and Haematobacter massiliensis cannot be distinguished from one another. Publication: Euzeby JP. Validation list no. 116. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2007; 57:1371-1373.

Parent taxon: Haematobacter Helsel et al. 2007

Assigned by: Helsel LO, Hollis D, Steigerwalt AG, Morey RE, Jordan J, Aye T, Radosevic J, Jannat-Khah D, Thiry D, Lonsway DR, et al. Identification of "Haematobacter," a new genus of aerobic Gram-negative rods isolated from clinical specimens, and reclassification of Rhodobacter massiliensis as "Haematobacter massiliensis comb. nov.". J Clin Microbiol 2007; 45:1238-1243. 🇺🇸

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Record number: 786429