First Report of the Multidrug Resistance Gene cfrand the Phenicol Resistance Gene fexAin a BacillusStrain from Swine Feces

ABSTRACTA multidrug resistance gene, cfr, and a phenicol resistance gene, fexA, were detected in a Bacillusstrain, BS-01, isolated from swine feces. The cfrgene was carried on a novel 16.5-kb plasmid, designated pBS-01. A complete Tn917structure, which harbors the macrolide-lincosamide-streptogramin B resistance gene erm(B), was located downstream of the cfrgene. The fexAgene was discovered in the chromosomal DNA of the BS-01 strain and identified in a Tn558variant.