Prevalence and Antibiotic Resistance against Tetracycline in and in Cattle and Beef Meat from Selangor, Malaysia.

is a major foodborne pathogen frequently associated with human bacterial gastroenteritis in the world. This study was conducted to determine the prevalence and antibiotic resistance of spp. in the beef food system in Malaysia. A total of 340 samples consisting of cattle feces ( = 100), beef ( = 120) from wet markets and beef ( = 120) from hypermarkets were analyzed for spp. The overall prevalence of was 17.4%, consisting of 33% in cattle fecal samples, 14.2% in raw beef from wet market and 7.5% in raw beef from the hypermarket. The multiplex-polymerase chain reaction (PCR) identified 55% of the strains as , 26% as , and 19% as other spp. A high percentage of spp. were resistant to tetracycline (76.9%) and ampicillin (69.2%), whilst low resistance was exhibited to chloramphenicol (7.6%). The MAR Index of isolates from this study ranged from 0.09 to 0.73. The present study indicates the potential public health risk associated with the beef food system, hence stringent surveillance, regulatory measures, and appropriate interventions are required to minimize contamination and prudent antibiotic usage that can ensure consumer safety.