Taxonomic Study of Coagulase-Positive Staphylococci: Bacteriolytic Activity Pattern Analysis

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Abstract
The taxonomic problem of coagulase-positive staphylococci of various origins is confronted in the present investigation by means of the bacteriolytic activity pattern analysis. A total of 103 strains isolated from various animal sources were examined using the same assay system which in previous studies was employed with staphylococci of human origin and permitted their subdivision into 6 lyogroups. Two groups (a and b) of coagulase-positive staphylococci were recognized by this method. Group a overlapped exactly with the species Staphylococcus aureus, whereas group b overlapped with the recently described species S. intermedius. The results obtained are discussed, as related to most recent data dealing with the taxonomy of coagulase-positive staphylococci and to previous findings on bacteriolytic activity patterns of staphylococci of human origin.