Quinolone Resistance Mechanisms in Salmonella enterica Serovars Hadar Kentucky Virchow Schwarzengrund and 4512:i:− Isolated from Humans in Switzerland and Identification of a Novel qnrD Variant qnrD2 in S. Hadar

摘要

Human isolates of Salmonella enterica serovars Hadar, Kentucky, Virchow, Schwarzengrund, and the monophasic variant of S. Typhimurium, Salmonella enterica subsp. enterica serovar 4,5,12:i:− were examined for mutations within the quinolone resistance target genes gyrA, gyrB, parC, and parE and for plasmid-mediated resistance genes. Differences were observed among the serovars. A novel variant of qnrD, qnrD2, was detected in an S. Hadar isolate.