| Campylobacter vicugnae |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae,
Genus Campylobacter, Campylobacter vicugnae Miller et al. 2024.
Genus Campylobacter, Campylobacter vicugnae Miller et al. 2024.
Gram-negative, curved to spiral cells. Coccoid forms are present in some cultures.
Motile.
Motile.
After 72h culture at 37 ºC under microaerobic conditions on anaerobe basal agar with
blood (ABA-B), colonies are glistening, opaque, convex and circular with entire
margins and are 1-2mm in diameter. Growth occurs on ABA-B at both 37 and 42 ºC
under microaerobic conditions and at 37 ºC under anaerobic conditions. No growth
on ABA-B at 30 ºC under microaerobic conditions or at any temperature under aerobic
conditions. Human-isolated strains didn't grow microerobically at 42 ºC. No
alpha-haemolytic activity. Growth is not supported on ABA-B with a final NaCl
concentration of 2% (w/v), with 1% (w/v) glycine or on 0.04% (w/v) TTC. H2 is not
required for growth.
blood (ABA-B), colonies are glistening, opaque, convex and circular with entire
margins and are 1-2mm in diameter. Growth occurs on ABA-B at both 37 and 42 ºC
under microaerobic conditions and at 37 ºC under anaerobic conditions. No growth
on ABA-B at 30 ºC under microaerobic conditions or at any temperature under aerobic
conditions. Human-isolated strains didn't grow microerobically at 42 ºC. No
alpha-haemolytic activity. Growth is not supported on ABA-B with a final NaCl
concentration of 2% (w/v), with 1% (w/v) glycine or on 0.04% (w/v) TTC. H2 is not
required for growth.
Isolated from wild boar faeces. Isolated from feces of a 50-year-old immunocompromised male patient with gastroenteritis and from
a 68-year-old female patient suffering from gastroenteritis with bloody liquid stools, fever, and abdominal pain for 3 weeks in France.
Resistant to 30mg / l cephalothin and to 30mg / l nalidixic acid.
a 68-year-old female patient suffering from gastroenteritis with bloody liquid stools, fever, and abdominal pain for 3 weeks in France.
Resistant to 30mg / l cephalothin and to 30mg / l nalidixic acid.
Undetermined. May be involved in human gastroenteritis.
- Miller WG, Lopes BS, Ramjee M, Jay-Russell MT, Chapman MH, Williams TG, Wood DF, Gruntar I, Papic B, Forbes KJ.
Campylobacter devanensis sp. nov., Campylobacter porcelli sp. nov., and Campylobacter vicugnae sp. nov., three novel
Campylobacter lanienae-like species recovered from swine, small ruminants, and camelids. Int J Syst Evol Microbiol 2024; 74:
6405. - Jehanne Q, Benejat L, Azzi Martin L, Korolik V, Ducournau A, Aptel J, Menard A, Jauvain M, Aguilera C, Doreille A, Mesnard L, Eckert
C, Lehours P. 2024. First isolation of Campylobacter vicugnae sp. nov. in humans suffering from gastroenteritis. Microbiol Spectr
12:e01523-24.
Positive results for alkaline phosphatase, catalase, nitrate reduction, oxidase and TTC reduction.
Negative results for H2S production on TSI, gamma-glutamyl transpeptidase, hippurate hydrolysis, indoxyl acetate hydrolysis, selenite
reduction and urease.
Negative results for H2S production on TSI, gamma-glutamyl transpeptidase, hippurate hydrolysis, indoxyl acetate hydrolysis, selenite
reduction and urease.
(c) Costin Stoica
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