EN
The aim of the following research was to analyse the presence of mutation in gyrA gene in C. jejuni and C. coli strains isolated from broilers, laving hens, turkeys collected between 1994-1996 and 2005-2008, and isolated from humans in 2006. The results of the research demonstrated that the highest percentage (100%) of the isolates showing mutation in gyrA gene was observed in Campylobacter coli strains isolated from turkeys between 2005 and 2008.