Name: Rickettsia conorii subsp. heilongjiangensis (Fournier et al. 2006) Hördt et al. 2020

Category: Subspecies

Proposed as: comb. nov.

Basonym: Rickettsia heilongjiangensis Fournier et al. 2006

Etymology: hei.long.jiang.en’sis. N.L. fem. adj. heilongjiangensis, from Heilongjiang, the Chinese province where the D. silvarum tick providing the first isolate was collected

Pronunciation (Latin), gender: rik-KETT-si-a ko-NO-ri-i he͡i-lon͡g-jian͡g-EN-sis, feminine

Type strain: ATCC VR-1524; CSUR 54; HLJ-054; Strain 054

Conduct genome-based taxonomy at

16S rRNA gene: AF178037 Analyse FASTA

Effective publication: 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. 🇩🇪

IJSEM list: Oren A, Garrity GM. Validation list no. 196. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:5596-5601.

Nomenclatural status: validly published under the ICNP

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

Risk group: 3

• Synonyms:

  • Name	Kind
    Rickettsia heilongjiangensis Fournier et al. 2006	homotypic synonym, validly published under the ICNP, distinct rank
    "Rickettsia heilongjiangii" Zhang et al. 2000	homotypic synonym, not validly published, distinct rank

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is -0.00132 (N = 2).
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 3, note = "(**) - Z". — 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.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the species itself.

Parent taxon: Rickettsia conorii corrig. Brumpt 1932 (Approved Lists 1980)

Assigned by: 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. 🇩🇪

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Record number: 13660