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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Streptococcus canis Devriese et al. 1986
Lancefield group G.
Lancefield group G.
Gram positive cocci, non-motile, grouped in pairs or chains.
Round, beta-hemolytic, non-pigmented colonies.Growth at 37 °C. Aerobic, facultatively
anaerobic. Growth on complex media: Trypticase soy agar with 5% sheep blood,
Mueller-Hinton medium enriched with 5% sheep blood, Brain heart infusion medium
anaerobic. Growth on complex media: Trypticase soy agar with 5% sheep blood,
Mueller-Hinton medium enriched with 5% sheep blood, Brain heart infusion medium
Isolated from animals (skin, upper respiratory tract & uro-genital tract, also from bovine milk). Human isolates are rare.
Dogs: dermatitis, otitis, metritis, vaginitis, pharyngitis. Cats: pharyngitis, sinusitis,septicemia, vaginitis
Bovines: mammitis.
Humans: septicemia (rare)
Bovines: mammitis.
Humans: septicemia (rare)
- Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994.
- Devriese L.A., Hommez J., Kilpper-Balz R. & Schleifer K.H.: Streptococcus canis sp. nov.: a species of group G streptococci
from animals. Int. J. Syst. Bacteriol., 1986, 36, 422-425. - P. A. Pesavento, M. J. Bannasch, R. Bachmann, B. A. Byrne and K. F. Hurley: Fatal Streptococcus canis Infections in Intensively
Housed Shelter Cats. Vet Pathol 44:218-221 (2007). - F Bert and N Lambert-Zechovsky: Septicemia caused by Streptococcus canis in a human. Journal of Clinical Microbiology, 03
1997, 777-779, Vol 35, No. 3 - L. L. Tikofsky1 and R. N. Zadoks: Cross-Infection Between Cats and Cows: Origin and Control of Streptococcus canis Mastitis
in a Dairy Herd. J. Dairy Sci. 88:2707-2713
Hippurate, fibrinolysin, tyrosine, starch hydrolysis, Voges-Proskauer, and
pyrrolidonylarylamidase, mannitol, sorbitol, lactose, xylitol, D-xylose, L-xylose,
& P-methyl-xyloside. - negative
L-aminopeptidase, alkaline phosphatase, leucine arylamidase, arginine
dehydrolase, esculin, ribose & beta-galactosidase positive
Alpha-galactosidase - variable
pyrrolidonylarylamidase, mannitol, sorbitol, lactose, xylitol, D-xylose, L-xylose,
& P-methyl-xyloside. - negative
L-aminopeptidase, alkaline phosphatase, leucine arylamidase, arginine
dehydrolase, esculin, ribose & beta-galactosidase positive
Alpha-galactosidase - variable
(c) Costin Stoica
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