Figure 2.

All 56 isolates were typed by various typing methods and cluster analysis was performed with PFGE and array data. Susceptibility of the isolates to 32 antibiotic agents was analysed by broth microdilution. All t1430 isolates showed high similarity in all typing methods applied. Parentheses indicate that these isolates were classified as intermediate susceptible to the antimicrobial agent according to CLSI standards. Isolates listed as resistant to apramycin, enrofloxacin, spectinomycin or tiamulin showed MIC values of ≥128 µ g/mL, ≥4 µ g/mL, ≥512 µ g/mL, and ≥16 µ g/mL, respectively. An enrofloxacin MIC value of 1 µ g/mL is indicated as intermediate resistance.