Scientific journal

56 2017

Journal of Food and Nutrition Research
Summary No. 4 / 2017

Skočková, A. – Koláčková, I. – Kubelová, M. – Karpíšková, R.
Shiga toxin-producing Escherichia coli (STEC) in the Czech Republic: Characterization of pathogenic strains isolated from pig and cattle carcasses
Journal of Food and Nutrition Research, 56, 2017, No. 4, s. 362–371

Ivana Koláčková, Department of Bacteriology, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic. E-mail:, tel. +420 778 706 138

Received 15 August 2017; 1st revised 3 October 2017; accepted 4 October 2017; published online 1 December 2017

Summary: This study was performed in order to monitor the occurrence of Shiga toxin-producing Escherichia coli (STEC) in swabs from the carcasses of pigs and cattle at slaughterhouses in the Czech Republic. Altogether, 38 out of 819 (4.6 %) swabs were positive for the presence of STEC. Overall, 41 isolates of shigatoxigenic E. coli and 3 strains with the characteristic of enterohemorrhagic E. coli (EHEC) were obtained. Fourteen (34.2 %) STEC isolates were resistant to at least one antimicrobial agent and 5 (12.2 %) of them were considered the multi-resistant isolates, while resistance to tetracycline and ampicillin was found most frequently. Highly pathogenic serogroups O91, O113, O146 and O157 were detected, but only the serogroup O157 strain harboured additional virulence factors (stx1a, stx2c and stx2e). Although raw meat has not been considered an important source of STEC for humans, our results point out that this route of infection cannot be excluded.

Keywords: Shiga toxin; serogroup O157; multi-resistant isolates; raw meat; Czech Republic

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