prevalence of quinolone resistance determinants in non-typhoidal salmonella isolates from human origin in extremadura, spain. | resistance to the quinolones nalidixic acid (nal) and ciprofloxacin (cip) and the occurrence of quinolone resistance determinants have been investigated in 300 non-typhoidal salmonella from human origin, isolated in the years between 2004 and 2008, in 6 hospitals within extremadura (spain). salmonella enteritidis was the major serotype found among quinolone-resistant isolates, most of which were clustered by clonal analysis to a single clone, which presented d87 or s83 substitutions in gyra. ele ... | 2014 | 24581744 |