[Shigella differentiation according to R factor affiliation with incompatibility groups taking into account antibiotic resistance spectra].

The study on 198 Shigella strains isolated from dysentery patients and cultures from 3 different dysentery foci showed a possibility of intraspecies typing of the causative agents according to the R factor incompatibility groups with regard to the antibiotic resistance spectra. The procedure was most effective in defining the similarity of the strain origin from the epidemiological foci.