title: Prevalence, antibiotic resistance, and molecular characterization of Salmonella serovars in retail meat products.
abstract: The prevalence of Salmonella was determined in chicken meat (n = 26), beef (n = 49), and pork (n = 56) collected from wholesale markets, retail stores, and traditional markets in Seoul, South Korea, in 2009. Antibiotic resistance was assessed, and the molecular subtypes of Salmonella isolates were ascertained using an automated repetitive sequence-based PCR (rep-PCR) system (DiversiLab). A total of 18 Salmonella strains were isolated from 17 of 131 samples: 16 strains from each of 16 samples and 2 strains from the same pork sample. The prevalence of Salmonella from the retail meats was 2.0% in beef, 8.9% in pork, and 42.3% in chicken meat. Among 10 different serotypes, Salmonella enterica Panama was recovered from a beef sample, and Salmonella London and Salmonella Montevideo were the predominant serotypes from pork and chicken meat, respectively. The highest antibiotic resistance observed was to erythromycin (100%) followed by streptomycin (22.2%) and tetracycline and chloramphenicol (16.7%). Of the 18 isolates, 5 (27.8%) were resistant to two or more antibiotics, and 1 isolate from chicken meat was resistant to eight antibiotics, including cephalosporins. Differentiation between all of the Salmonella isolates except between Salmonella Montevideo and Salmonella London was successfully performed with the automated rep-PCR system, indicating that it can be added to the toolbox for source tracking of foodborne pathogens associated with outbreaks.
authors.affiliation: Department of Public Health, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, South Korea.
authors.forename: Ji-Yeon
authors.initials: JY
authors.lastname: Hyeon
authors.forename: Jung-Whan
authors.initials: JW
authors.lastname: Chon
authors.forename: In-Gyun
authors.initials: IG
authors.lastname: Hwang
authors.forename: Hyo-Sun
authors.initials: HS
authors.lastname: Kwak
authors.forename: Moo-Sang
authors.initials: MS
authors.lastname: Kim
authors.forename: Soo-Ki
authors.initials: SK
authors.lastname: Kim
authors.forename: In-Soo
authors.initials: IS
authors.lastname: Choi
authors.forename: Chang-Seon
authors.initials: CS
authors.lastname: Song
authors.forename: Chankyu
authors.initials: C
authors.lastname: Park
authors.forename: Kun-Ho
authors.initials: KH
authors.lastname: Seo
mesh_terms: D000818:Animals; D002417:Cattle; D002645:Chickens / Q000382:microbiology; D024881:Drug Resistance, Bacterial; D024901:Drug Resistance, Multiple, Bacterial; D005506:Food Contamination / Q000032:analysis*; D005516:Food Microbiology; D006801:Humans; D008461:Meat Products / Q000382:microbiology*; D008826:Microbial Sensitivity Tests; D016133:Polymerase Chain Reaction; D015995:Prevalence; D012475:Salmonella / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification; D013045:Species Specificity; D013552:Swine / Q000382:microbiology