title: Prevalence and antimicrobial resistance of Salmonella in retail foods in northern China.
abstract: A total of 387 retail meat, seafood and milk powder samples were collected from nine cities in northern China in 2005 and screened for the presence of Salmonella. Salmonella strains isolated were subjected to serotyping and antimicrobial susceptibility testing. Salmonella was isolated from 81 (20.9%, 81/387) samples and classified into 23 serotypes. The isolates were frequently resistant to sulfamethoxazole (86.4%), sulfamethoxazole/trimethoprim (48.1%), nalidixic acid (30.9%), tetracycline (19.8%), carboxybenzylpenicillin (17.3%), amoxicillin (17.3%) and ampicillin (16.0%). The multiple resistance (resistance to ≥ 3 antibiotics) was found in 29.6% (n = 24) isolates. Additionally, 4 isolates from chicken displayed the ACSSuTNx profile, resistant to ampicillin, chloramphenicol, streptomycin, sulfonamide, tetracycline and nalidixic acid, in particular, strain HBS084 showing the resistance to as many as 20 antibiotics. Salmonella from chicken showed the higher frequency of antimicrobial resistance. Our findings indicate that in northern China food products of animal origin can be a source of exposure for consumers to multiresistant Salmonella strains.
authors.affiliation: College of Light Industry and Food Sciences, South China University of Technology, 510640 Guangzhou, PR China.
authors.forename: He
authors.initials: H
authors.lastname: Yan
authors.forename: Lin
authors.initials: L
authors.lastname: Li
authors.forename: M Jahangir
authors.initials: MJ
authors.lastname: Alam
authors.forename: Sumio
authors.initials: S
authors.lastname: Shinoda
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Miyoshi
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002417:Cattle; D002645:Chickens; D002681:China; D024881:Drug Resistance, Bacterial; D005516:Food Microbiology; D008460:Meat / Q000382:microbiology; D008892:Milk / Q000382:microbiology; D012475:Salmonella / Q000187:drug effects* / Q000302:isolation & purification*; D017747:Seafood; D012756:Sheep; D013552:Swine
chemical_list: D000900:Anti-Bacterial Agents