인천지역 닭 도축장에서 분리된 Salmonella spp.의 항생제 내성 및 PFGE 패턴분석
Analysis of antimicrobial resistance and PFGE patterns of Salmonella spp. isolated from chickens at slaughterhouse in Incheon area
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Abstract
Salmonella spp. are the important pathogens both economically and clinically in animals as well human. Some of them have highly zoonotic potentials even though they are asymptomatic in animals. Therefore, the prevalence of Salmonella spp. in animals is highly concerned for human health. The present study was carried out to investigate the prevalence, antimicrobial resistance and PFGE patterns of Salmonella spp. isolated from chickens at slaughterhouse in Incheon area. Thirty seven isolates of Salmonella spp. belonging to 5 serotypes (S. Enteritidis 46.0%, S. Newport 40.5%, S. Typhimurium 8.1%, S. Gallinarum 2.7%, S. Derby 2.7%) were identified with an overall prevalence rate of 7.3 percent. Resistance to nalidixic acid was found in 97.3% of Salmonella spp. isolated, followed by streptomycin (16.2%), tetracycline (16.2%), ampicillin (5.4%). Only 6 isolates (16.2%) showed resistance to more than two antimicrobials. In PFGE analysis of chicken and human isolates with Xba I, S. Enteritidis isolates from chicken showed very high similarity with higher than 82.8% and also the similarity was very high in the comparison with human isolates. However, the higher similarity (100%) was observed only chicken isolates of S. Typhimurium. These results suggest the close genetic relatedness of Salmonella spp. isolated from chickens with human.
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