The EC infection incidence was 9.3%. ESBL activity was detected in 25 isolates. Among them 16 were resistant to at least two other groups of antibiotics. All ESBL isolates carried the bla-CTX-M gene (60% had CTX-M-15 and 40% had CTX-M-3) and 12 isolates had also TEM-1 gene. The clone ST131 was detected in 33 strains and 12 of them carried the CTX-M-15 gene.
Most frequently detected adhesion genes were fimH 75% papC 51% and sfa 44%. From iron-related genes often occurred: fhuA 87%, fecA75%, fyuA 56%, iroN 55%, iutA 54%.
The blood isolates were more likely to possess the ibeA than were isolates from urine and RT (37,5%, 0%, 16% respectively), and urine isolates - iha (75% vs. 24% - RT vs. 8.3% - blood).
7 isolates clustered in ECOR group A, 5 in B1, 62 - in B2 and 16 in D group. In B2 group the number of VFs was higher than in A and D (29% isolates from B2 group had >11 VFs and 56% isolates from A and D group had <3 VFs).
The majority of the isolates belonging to the ST131 clone were from the B2 group,
EC isolates showed very different pulsotypes, epidemic clones were not detected.