[Coagulase-negative staphylococci in pyoseptic pathology and methods for their identification].

Analysis of clinical material from cardiosurgical and cardiotherapeutic patients and that from neonates with pyoseptic infections, hospitalized in Moscow and Gorky, has demonstrated the etiologic significance of coagulase-negative Staphylococci (CNS). Since many strains did not belong to S. aureus, S. epidermidis, or S. saprophyticus, they were species-identified in accordance with the classification by W. Kloos and K. Schleifer (1975). A variety of CNS species was observed, and their role in the development of pyoseptic infections shown, the contribution of S. epidermidis and S. haemolyticus being the greatest here. Besides S. aureus, S. xylosus was often isolated from purulent foci. A certain specificity in CNS spectrum, related to the hospital profile, was revealed. A brief modified scheme of CNS classification was developed, based on analysis of about 700 strains, in accordance with the classification of W. Kloos and K. Schleifer, that included the tests available for practical laboratories.