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PubMed1984

[Effect of the transfer of the R plasmids of resistant Salmonella typhimurium strains of different origins on the phage sensitivity of Salmonella typhimurium].

It has been shown that after the transfer of R-plasmids from S. typhimurium strains of different origin to S typhimurium strains sensitive to antibiotics these latter strains, as a rule, cannot be typed according to the scheme of Felix and Kellow These strains retain sensitivity to phages from I. G. Chiarkadze's collection, but the spectrum of their phage sensitivity is narrower. In one case the recipient was noted to change its phagovar to that of the donor. S. typhimurium donor strains, differing in the degree of their influence on the virulence of recipients, do not differ in their capacity for changing their sensitivity to the phages from the international collection of Felix and Kellow and from I. G. Chirakadze's collection.

Anti-Bacterial Agents↗
PubMed1984

[Strains of the family Enterobacteriaceae isolated from chronic bacterial carriers of Salmonella typhi and Salmonella schottmuelleri and from healthy persons].

Fecal samples obtained from 51 chronic carriers of S. typhi and S. schottmuelleri and from 35 healthy persons were studied. Strains of different species of Enterobacteriaceae were isolated and identified. The resistance of the isolated strains to the most commonly used antibiotics was determined. The fecal samples of the carriers were found to yield a greater number of strains than those of the healthy persons. Among the strains isolated from the carriers a variety of species was noted. S. typhi and S. schottmuelleri strains were found to be sensitive to the tested antibiotics. Antibiotic-resistant strains were mostly isolated from members of the medical staff.

Anti-Bacterial Agents↗