Name: Aggregatibacter aphrophilus (Khairat 1940) Nørskov-Lauritsen and Kilian 2006

Category: Species

Proposed as: comb. nov.

Basonym: Haemophilus aphrophilus Khairat 1940 (Approved Lists 1980)

Etymology: a.phro.phi.lus. Gr. masc. n. aphros, foam; N.L. adj. philus -a -um, friend, loving; from Gr. adj. philos -ê -on, loving; N.L. masc. adj. aphrophilus, foam loving

Gender: masculine

Type strain: ATCC 33389; CCUG 3715; CIP 70.73; NCTC 5906

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU083529 Analyse FASTA

Valid publication: Norskov-Lauritsen N, Kilian M. Reclassification of Actinobacillus actinomycetemcomitans, Haemophilus aphrophilus, Haemophilus paraphrophilus and Haemophilus segnis as Aggregatibacter actinomycetemcomitans gen. nov., comb. nov., Aggregatibacter aphrophilus comb. nov. and Aggregatibacter segnis comb. nov., and emended description of Aggregatibacter aphrophilus to include V factor-dependent and V factor-independent isolates. Int J Syst Evol Microbiol 2006; 56:2135-2146.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 56, part 9 of the IJSEM. Int J Syst Evol Microbiol 2006; 56:2725-2726.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Synonyms:

  • Name	Kind
    Haemophilus paraphrophilus Zinnemann et al. 1968 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP
    Haemophilus aphrophilus Khairat 1940 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • According to Noerskov-Lauritsen and Kilian (2006), this species is an earlier heterotypic synonym of Haemophilus paraphrophilus Zinnemann et al. 1968 (Approved Lists 1980). Publication: Norskov-Lauritsen N, Kilian M. Reclassification of Actinobacillus actinomycetemcomitans, Haemophilus aphrophilus, Haemophilus paraphrophilus and Haemophilus segnis as Aggregatibacter actinomycetemcomitans gen. nov., comb. nov., Aggregatibacter aphrophilus comb. nov. and Aggregatibacter segnis comb. nov., and emended description of Aggregatibacter aphrophilus to include V factor-dependent and V factor-independent isolates. Int J Syst Evol Microbiol 2006; 56:2135-2146.
  • 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 2022; 168:0.

Parent taxon: Aggregatibacter Nørskov-Lauritsen and Kilian 2006

Assigned by: Norskov-Lauritsen N, Kilian M. Reclassification of Actinobacillus actinomycetemcomitans, Haemophilus aphrophilus, Haemophilus paraphrophilus and Haemophilus segnis as Aggregatibacter actinomycetemcomitans gen. nov., comb. nov., Aggregatibacter aphrophilus comb. nov. and Aggregatibacter segnis comb. nov., and emended description of Aggregatibacter aphrophilus to include V factor-dependent and V factor-independent isolates. Int J Syst Evol Microbiol 2006; 56:2135-2146.

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Record number: 785425