The name S. dysgalactiae subsp. equisimiliswas proposed for human isolates, while S. dysgalactiae subsp. dysgalactiae was proposed for animal isolates. Twoyears later, the name S. dysgalactiae subsp. dysgalactiae forthe alpha haemolytic group C strains and S. dysgalactiaesubsp. equisimilis for the beta-haemolytic strains were beenproposed on the basis of DNA–DNA reassociation exper-iments