Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Campylobacter,
Campylobacter hominis Lawson et al. 2001.
Gram-negative rods, small, straight, 0.25–0.5 x 0.5–1.8 μm, after 10 days of incubation,
with blunt ends. Nonmotile.
Colonies are pinpoint, gray, may be convex and entire or spreading and irregular on
blood agar base media. No haemolysis, no agar pitting. No growth at 25 ºC or 42 ºC.
Better growth anaerobically, at 37 ºC. Grows microaerobically in the absence of
hydrogen, grow in air, in a CO2-enriched atmosphere, or in an atmosphere containing
5% O2, 10% CO2 and 85% N2 .
Can grow on media containing 0.1% sodium fluoride, 1% glycine, 2% NaCl (most
strains), but not in the presence of 0.04% triphenyltetrazolium chloride, 0.02%
safranin or KMnO4.
Isolated from feces of humans without clinical signs.
- Don J. Brenner and J.J. Farmer III, 2001. Family I. Campylobacteraceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1145-1168.
- A J Lawson, S L On, J M Logan, and J Stanley. Campylobacter hominis sp. nov., from the human gastrointestinal tract. Int J Syst
Evol Microbiol March 2001 51:651-60.
Usually positive results for oxidase.
Negative results for alkaline phosphatase, indoxyl acetate hydrolysis, catalase, urease, hippurate hydrolysis, nitrate reduction,
selenite reduction, H2S production on TSI. No carbohydrates fermentation.
(c) Costin Stoica