Name: Dialister invisus Downes et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: in.vi’sus. L. masc. part. adj. invisus, unseen, referring to the lack of turbidity of broth cultures of this organism

Pronunciation, gender: in-WI-sus, masculine

Type strain: CCUG 47026; DSM 15470; E7.25

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY162469 Analyse FASTA

Valid publication: Downes J, Munson M, Wade WG. Dialister invisus sp. nov., isolated from the human oral cavity. Int J Syst Evol Microbiol 2003; 53:1937-1940. 🇬🇧

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 6 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:309-311.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Notes:
  • 😷 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 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. — 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 72 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. 🇬🇧

Parent taxon: Dialister (ex Bergey et al. 1923) Moore and Moore 1994

Assigned by: Downes J, Munson M, Wade WG. Dialister invisus sp. nov., isolated from the human oral cavity. Int J Syst Evol Microbiol 2003; 53:1937-1940. 🇬🇧

Linking: To permanently link to this page, use https://lpsn.dsmz.de/species/dialister-invisusCopy to clipboardLink copied to clipboard

Record number: 775757