Occurrence of a Salmonella enterica Serovar Typhimurium DT104-Like Antibiotic Resistance Gene Cluster Including thefloR Gene in S. enterica Serovar Agona

ABSTRACT

Recently a chromosomal locus possibly specific for Salmonella enterica serovar Typhimurium DT104 has been reported that contains a multiple antibiotic resistance gene cluster. Evidence is provided that Salmonella enterica serovar Agona strains isolated from poultry harbor a similar gene cluster including the newly described floR gene, conferring cross-resistance to chloramphenicol and florfenicol.