Ciprofloxacin susceptibility reduction of Salmonella strains isolated from outbreaks

B. Souza, RobertaG. Ferrari, RafaelaMagnani, MarcianeB. M. Kottwitz, LucianaAlcocer, IlianaCristina B. Tognim, MariaC. R. M. Oliveira, Tereza

The antimicrobial susceptibility of 212 Salmonella strains isolated from patients and foods was evaluated and 45% were found to be resistant to nalidixic acid. Nalidixic acid resistant strains showed a higher minimal inhibitory concentration for ciprofloxacin than sensitive strains. During the study an increase of strains with reduced susceptibility to ciprofloxacin was also observed.

1. quinolones
2. microbial resistance
3. fluoroquinolones
4. Minimal Inhibitory Concentration (MIC)