Prevalence and Antibiotic Resistance of Enteritidis and Typhimurium in Ground Beef and Meatball Samples in Samsun, Turkey.

The aims of this study were to evaluate the prevalence of spp., including . Enteritidis and Typhimurium, their antibiotic resistance profiles, and the presence/absence of class 1 integron () in 50 raw ground beef and 50 raw, meatball samples collected in the Samsun Province, Turkey. For the detection of conventional culture technique and PCR assay were used. The antibiotic resistance profiles of the isolates against nine antibiotics were tested. spp. was detected in 20 ( = 86 isolates) samples, namely 12 ground beef and 8 meatball samples. Enteritidis ( = 12; 24 isolates) or . Typhimurium ( = 3; 6 isolates) was detected in 15 (75.00%,  = 30 isolates) samples. At least one species-specific gene ( or ) was detected in the isolates. All isolates were sensitive to two of the third-generation cephalosporins and also nalidixic acid. There was a different level of multidrug resistance (MDR) between . Enteritidis and Typhimurium isolates. Class 1 integron was detected in four samples ( = 7 isolates); seven isolates were . Enteritidis and four out of the seven . Enteritidis isolates were also MDR. In conclusion, the presence of , particularly . Enteritidis and . Typhimurium, in ground beef and meatballs may cause foodborne infections. The presence of antibiotic-resistant and . Enteritidis with the Cls1integron is important for horizontal antibiotic gene transfer.