Mutations in Gyrase and Topoisomerase and presence of qnr genes, according to serovar and resistance phenotype in 59 <i>Salmonella</i> spp.

<p><i>NaS, nalidixic acid susceptible; CipS, ciprofloxacin susceptible; NaR, nalidixic resistant; DCS, decreased ciprofloxacin susceptibility</i>.</p>a<p><i>co-presence of Ser 83(gyrA) and Thr57 (parC) mutations in 4 isolates</i>;</p>b<p><i>Glu133→Gly: silent mutation</i>;</p>c<p> <i>Thr57→Ser: silent mutation;</i></p>d<p><i>Ile125→Ser: silent mutation</i>.