Characterization of multiple-antimicrobial-resistant Salmonella enterica Subsp. enterica isolated from indigenous vegetables and poultry in Malaysia

• Published in: Letters in applied microbiology Vol. 46; no. 3; pp. 318 - 324
• Main Authors: Yoke-Kqueen, C, Learn-Han, L, Noorzaleha, A.S, Son, R, Sabrina, S, Jiun-Horng, S, Chai-Hoon, K
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford, UK : Blackwell Publishing Ltd 01.03.2008; Blackwell Publishing Ltd; Blackwell Science
• Subjects: Animals; Anti-Bacterial Agents - pharmacology; Biological and medical sciences; characterization; Disease Reservoirs; Drug Resistance, Multiple, Bacterial; Fundamental and applied biological sciences. Psychology; indigenous vegetables; Malaysia; Microbial Sensitivity Tests; Microbiology; multiple-antimicrobial-resistant-Salmonella; Poultry - microbiology; Poultry Diseases - microbiology; Salmonella enterica - classification; Salmonella enterica - drug effects; Salmonella enterica - isolation & purification; Salmonella Infections, Animal - microbiology; Serotyping; Vegetables - microbiology; Asia; Malaysia; Characterization; Salmonella; Vegetables; Sensitivity resistance; Applied microbiology; Poultry; Bacteria; multiple-antimicrobial-resistant-Sa/mone//a; indigenous vegetables; Antimicrobial agent; Enterobacteriaceae
• ISSN: 0266-8254; 1472-765X
• DOI: 10.1111/j.1472-765X.2007.02311.x

The aims of this communication were to study characterization of serogroups among Salmonella isolates and the relationship of antimicrobial resistance to serogroups. Multiple antimicrobial resistance (MAR) was performed on 189 Salmonella enterica isolates associated with 38 different serovars that were recovered from poultry and four types of indigenous vegetables. Disc diffusion analysis was performed with a selection of 10 different antimicrobial agents. Isolates recovered from indigenous vegetables showed 100% (134/134) resistant to erythromycin and followed by 42%, 34%, 19% for tetracycline, streptomycin and trimethroprim-sulfamethoxazole respectively. In general, 90·1% (50/55) and 56·7% (76/134) of Salmonella isolated from poultry and indigenous vegetables, respectively, exhibited MAR index more than 0·2. Characterization of Salmonella isolates based on the MAR results indicated that poultry still remains as the main reservoir for multi-drug-resistant Salmonella. Four isolates from the indigenous vegetables showed the highest MAR index in this study. Further investigations need to be conducted to determine if Salmonella isolates recovered from indigenous vegetables were gaining more antimicrobial resistance. The study enabled us to determine antimicrobial patterns and trends in Salmonella from poultry and indigenous vegetables in Malaysia.