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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus =>
Streptococcus infantis Kawamura et al. 1998
Streptococcus peroris Kawamura et al. 1998
Streptococcus infantis Kawamura et al. 1998
Streptococcus peroris Kawamura et al. 1998
Cells are non-sporulating, non-motile, Gram-positive cocci, grouped in short chains.
Alpha-haemolytic, small (0.3 - 0.8 mm in diameter) colonies after 48 hour incubation.
Alpha-haemolytic, small (0.3 - 0.8 mm in diameter) colonies after 48 hour incubation.
Growth at 37 °C. Facultatively anaerobic.
Grow on Trypticase soy agar with 5% sheep blood.
Grow on Trypticase soy agar with 5% sheep blood.
Isolated from human clinical samples - oral cavity (tooth surface) & pharynx.
Unknown (none).
- Yoshiaki Kawamura, Xiao-Gang Hou, Yuko Todome, Ferdousi Sultana, Kenji Hirose, Sin-Ei Shu, Takayuki Ezaki & Hisashi
Ohkuni: Streptococcus peroris sp. nov. and Streptococcus infantis sp. nov., new members of the Streptococcus mitis group,
isolated from human clinical specimens. Int. J. Syst. Bacteriol., 1998, 48, 921-927.
Streptococcus infantis can be differentiated from Streptococcus peroris by the S.
infantis' beta-Galactosidase positive, tagatose positive & alkaline phosphatase
negative reactions
infantis' beta-Galactosidase positive, tagatose positive & alkaline phosphatase
negative reactions
(c) Costin Stoica
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