Phagetypes, antimicrobial resistance and biological properties of Salmonella typhimurium clinical isolates from the Slovak Republic
2003
Majtan, J.,Slovak Academy of Sciences, Bratislava (Slovak Republic). Institute of Chemistry | Majtan, V.,Institute of Preventive and Clinical Medicine, Bratislava (Slovak Republic)
The phage type, resistance to antibiotics as well as the biological properties such as surface hydrophobicity, motility, and the ability to form a biofilm of Salmonella typhimurium strains (n=74) isolated from patients with gastroenteritis in the Slovak Republic were evaluated. Eighteen strains (24.3%) were phage type 2 b, 1 strain (1.4%) was phage type 1 variant 2 and 10 strains (13.5%) represented definitive type 104. As many as 45 strains (60.8%) were untypable. From the collection 12.2% of strains were susceptible to all antibiotics tested. The multiresistance to 2-9 antibiotics was found in the high number of untypable strains (44.6%). The most frequent resistance to ampicillin (48.6%), streptomycin (64.9%) and tetracycline (59.5%) was found. On the basis of our results, 51.4% of strains were hydrophobic in the assay of bacterial adherence to xylene and 98.6% of strains were hydrophobic in salt aggregation test. The motility of the tested strains was high with except from 2 strains. The ability to form a biofilm was demonstrated in 90.5% of strains indicating their high virulent potential. These findings indicate the high resistance of S. typhimurium strains as well as their considerable virulent potential, which, however, needs further study.
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