The need to assay the real MIC when making the decision to eradicate Staphylococcus aureus with vancomycin.

Purpose: The aim of the study was a comparison of the MIC (minimal inhibitory concentration) evaluated in the automatic system Vitek 2 and the real MIC of vancomycin by the Etest method for S. aureus strains isolated from clinical materials.

Material And Methods: Over a twelve-month study period we compared the results obtained with two commercial methods - the automatic system VITEK 2 and the real MIC by Etest - for 359 strains of S.

Rothia mucilaginosa, rarely isolated pathogen as an etiological factor of infection of soft tissues in young, healthy woman.

This paper presents a rare case of facial soft tissue infection caused by the bacterial strain of Rothia mucilaginosa. Odontogenic background of infection and initial clinical presentation suggested the presence of typical bacterial flora and uncomplicated course of treatment. However, despite surgical intervention and broad-spectrum antibiotic therapy, the expected improvement of a clinical status was not achieved.