Prevalence and Antibiotic Susceptibility of Salmonella Isolated from Foods in Korea from 1993 to 2001

Chung, Yun-Hee; Kim, S. Y.; Chang, Yunhee

doi:10.4315/0362-028x-66.7.1154

Cited by 49 publications

(30 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results in this study show that multidrug-resistance is common in Salmonella isolates from poultry and swine, which are similar to those previously reported in Thailand [4,20] and from other countries [7,9,13]. High proportions of resistant S. enterica from swine and poultry were in agreement with a recent study conducted in Thailand that reported the highest resistance rate in Salmonella spp.…”

Section: Discussionsupporting

confidence: 82%

Susceptibilities to Antimicrobials and Disinfectants in Salmonella Isolates Obtained from Poultry and Swine in Thailand

et al. 2008

View full text Add to dashboard Cite

ABSTRACT. Salmonella enterica isolates from poultry (n=125) and swine (n=132) in Thailand were investigated for antibiotic resistance, susceptibility to disinfectants (benzalkonium chloride (BKC), chlorhexidine digluconate (CHX), zinc chloride and copper sulfate) and cyclohexane tolerance. Forty-two percent were of multiple resistance to antibiotics. The minimum inhibitory concentrations (MICs) of all antibiotics against isolates from swine were higher than that against the isolates from poultry. There were generally few variations in MICs to all disinfectants, indicating that the isolates had either no or only a limited degree of developed resistance to the disinfectants tested. Only 5 isolates (1.9%) were tolerant to cyclohexane. The proton-dependent efflux systems did not play a major role in the reduced susceptibility to BKC and CHX, since susceptibility was not restored when an efflux inhibitor, carbonyl cyanide m-chlorophenylhydrazone (CCCP) was present. Successive exposure to subinhibitory concentrations of BKC and CHX generated mutants resistant to BKC and CHX. A spontaneous BKC-resistant derivative expressed cross-resistance to antibiotics, chloramphenicol and erythromycin. The mechanism responsible for cross-resistance between BKC and antibiotics was not driven by the proton motif force (PMF). KEY WORDS: benzalkonium chloride, multiple antibiotic resistance, Salmonella enterica, proton-dependent efflux system.

show abstract

Section: Discussionsupporting

confidence: 82%

Susceptibilities to Antimicrobials and Disinfectants in Salmonella Isolates Obtained from Poultry and Swine in Thailand

et al. 2008

View full text Add to dashboard Cite

show abstract

“…The reported rates of Salmonella contamination in retail meat and poultry are lower in more developed countries. In this study, 53.3% of poultry samples were contaminated with Salmonella, compared to only 23 to 29% in the United Kingdom (27, 41), 2.8 to 26.4% in Ireland (24, 29), 13.2% in The Netherlands (50), 35.8% in Spain (19), 36.5% in Belgium (48), and 36% in Korea (15). However, the rate was 60% in Portugal (5).…”

Section: Discussionmentioning

confidence: 72%

Detection ofSalmonellaspp. in Retail Raw Food Samples from Vietnam and Characterization of Their Antibiotic Resistance

Van

Moutafis

Istivan

et al. 2007

Appl Environ Microbiol

153

View full text Add to dashboard Cite

A study was conducted to examine the levels of Salmonella spp. contamination in raw food samples, including chicken, beef, pork, and shellfish, from Vietnam and to determine their antibiotic resistance characteristics. A total of 180 samples were collected and examined for the presence of Salmonella spp., yielding 91 Salmonella isolates. Sixty-one percent of meat and 18% of shellfish samples were contaminated with Salmonella spp. Susceptibility of all isolates to a variety of antimicrobial agents was tested, and resistance to tetracycline, ampicillin/amoxicillin, nalidixic acid, sulfafurazole, and streptomycin was found in 40.7%, 22.0%, 18.7%, 16.5%, and 14.3% of the isolates, respectively. Resistance to enrofloxacin, trimethoprim, chloramphenicol, kanamycin, and gentamicin was also detected (8.8 to 2.2%). About half (50.5%) of the isolates were resistant to at least one antibiotic, and multiresistant Salmonella isolates, resistant to at least three different classes of antibiotics, were isolated from all food types. One isolate from chicken (serovar Albany) contained a variant of the Salmonella genomic island 1 antibiotic resistance gene cluster. The results show that antibiotic resistance in Salmonella spp. in raw food samples from Vietnam is significant.

show abstract

“…The rate of Salmonella contamination in retail meat samples above 60% is significantly higher than that reported for other countries (16,19,21,25,27,45,58,61). The antibiotic resistance susceptibility results also indicated alarming multiresistance frequencies for Salmonella and E. coli isolates from food, where multiresistance rates of 20.9% for Salmonella isolates and 61.6% for E. coli isolates were detected and most probably reflect the unregulated use of antibiotics in food-producing animals in the country (60).…”

Section: Discussionmentioning

confidence: 74%

“…Where they are reported, rates of resistance to antibiotics of bacteria originating from meat were high in developing countries (2,3,16,37,54), possibly as the result of the inappropriate or uncontrolled use of antibiotics in farming practices. Therefore, the study of antibiotic resistance in developing countries is important as the information could enhance prudent use of antibiotics in food production.…”

mentioning

confidence: 99%

Antibiotic Resistance in Food-Borne Bacterial Contaminants in Vietnam

Van

Moutafis

Tran

et al. 2007

Appl Environ Microbiol

111

View full text Add to dashboard Cite

This study was conducted to examine the rate of contamination and the molecular characteristics of enteric bacteria isolated from a selection of food sources in Vietnam. One hundred eighty raw food samples were tested; 60.8% of meat samples and 18.0% of shellfish samples were contaminated with Salmonella spp., and more than 90% of all food sources contained Escherichia coli. The isolates were screened for antibiotic resistance against 15 antibiotics, and 50.5% of Salmonella isolates and 83.8% of E. coli isolates were resistant to at least one antibiotic. Isolates were examined for the presence of mobile genetic elements conferring antibiotic resistance. Fifty-seven percent of E. coli and 13% of Salmonella isolates were found to contain integrons, and some isolates contained two integrons. Sequencing results revealed that the integrons harbored various gene cassettes, including aadA1, aadA2, and aadA5 (resistance to streptomycin and spectinomycin), aacA4 (resistance to aminoglycosides), the dihydrofolate reductase gene cassettes dhfrXII, dfrA1, and dhfrA17 (trimethoprim resistance), the beta-lactamase gene bla PSE1 (ampicillin resistance), and catB3 (chloramphenicol resistance). Plasmids were also detected in all 23 antibiotic-resistant Salmonella isolates and in 33 E. coli isolates. Thirty-five percent of the Salmonella isolates and 76% of the E. coli isolates contained plasmids of more than 95 kb, and some of the isolates contained two large plasmids. Conjugation experiments showed the successful transfer of all or part of the antibiotic resistance phenotypes among the Salmonella and E. coli food isolates. Our results show that enteric bacteria in raw food samples from Vietnam contain a pool of mobile genetic elements and that the transfer of antibiotic resistance can readily occur between similar bacteria.

show abstract

Prevalence and Antibiotic Susceptibility of Salmonella Isolated from Foods in Korea from 1993 to 2001

Cited by 49 publications

References 9 publications

Susceptibilities to Antimicrobials and Disinfectants in Salmonella Isolates Obtained from Poultry and Swine in Thailand

Susceptibilities to Antimicrobials and Disinfectants in Salmonella Isolates Obtained from Poultry and Swine in Thailand

Detection ofSalmonellaspp. in Retail Raw Food Samples from Vietnam and Characterization of Their Antibiotic Resistance

Antibiotic Resistance in Food-Borne Bacterial Contaminants in Vietnam

Contact Info

Product

Resources

About