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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus =>
Streptococcus equi subsp. equi Sand and Jensen 1888
Streptococcus equi subsp. ruminatorum Fernández et al. 2004
Streptococcus equi subsp. zooepidemicus (ex Frost and Englebrecht 1936) Farrow and Collins 1985
Lancefield group C.
Streptococcus equi subsp. equi Sand and Jensen 1888
Streptococcus equi subsp. ruminatorum Fernández et al. 2004
Streptococcus equi subsp. zooepidemicus (ex Frost and Englebrecht 1936) Farrow and Collins 1985
Lancefield group C.
Gram positive, 0.6-1.0 μm, cocci; occur in pairs, short or long chains.
Beta - haemolytic, small colonies (slightly mucous).Growth at 37.0°C, no
growth at 10 or 45 °C.
Growth on complex media (Trypticase soy agar with defibrinated sheep blood).
growth at 10 or 45 °C.
Growth on complex media (Trypticase soy agar with defibrinated sheep blood).
Isolated from animal clinical samples - wounds, absceses, respiratory tract discharges; milk (horses, ruminants; rarely isolated from
other animals).
other animals).
Subsp. zooepidemicus - blood infections, inflammatory exudate & lesions
Subsp. equi - produce equine strangle
Subsp. ruminatorum - mastitis in ruminants
Subsp. equi - produce equine strangle
Subsp. ruminatorum - mastitis in ruminants
- Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994.
- Sand G. & Jensen C.O. Die Aetiologie der Druise. Deutsche Zeitschrift fur Tiermedizin und Vergleichende Pathologie, 1888,
13, 437-464. - Fernandez E., Blume V., Garrido P., Collins M.D., Mateos A., Dominguez L. & Ffernandez-Garayzabal J.F.: Streptococcus equi
subsp. ruminatorum subsp. nov., isolated from mastitis in small ruminants. Int. J. Syst. Evol. Microbiol., 2004, 54, 2291-2296. - Farrow J.A.E. & Collins M.D. Taxonomic studies on streptococci of serological groups C, G and L and possibly related taxa.
Syst. Appl. Microbiol., 1985, 5, 483-493.
Voges-Proskauer, Alpha Galactosidase, Beta Galactosidase, acidification of Mannitol,
Trehalose & Raffinose = negative
Beta Glucuronidase, Alkaline phosphatase & ADH = positive
Differentiating S. equi subspecies
Trehalose & Raffinose = negative
Beta Glucuronidase, Alkaline phosphatase & ADH = positive
Differentiating S. equi subspecies
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