[Sensitivity to polyvalent therapeutic staphylococcal bacteriophage as a supplementary criterion of staphylococcal pathogenicity].

It is recommended to use the capacity of pathogenic staphylococci to be lysed by polyvalent therapeutic staphylococcal bacteriophage in the capacity of an additional simple and accessible criterion of staphylococcus pathogenicity. Of 147 strains of the pathogenic plasmacoagulating staphylococci 101 were lysed by the phage and of 166 nonplasmocoagulating nonpathogenic strains--only 6. This test correlated with the other signs of staphylococcus (lecithinase and hemolytic activity).