Prevalence and antimicrobial resistance of Salmonella species isolated from chicken meats produced by different integrated broiler operations in Korea

Abstract

Prevalence and antimicrobial resistance profiles of Salmonella serotypes isolated from 7 chicken meat brands produced by different integrated broiler operations in Korea were determined. In total, 210 samples were collected from retail supermarkets in Seoul, South Korea, and analyzed for the presence of Salmonella. Of 210 chicken meat samples, overall Salmonella prevalence was 22.4%. Salmonella Enteritidis was the dominant serovar, with an isolation rate of 57.4% from the Salmonella-positive chickens, followed by Salmonella Montevideo. Salmonella isolates frequently were resistant to various antibiotics, including 100% to erythromycin, 87% to cephalothin, 85% to nalidixic acid, and 70% to streptomycin. Of the 47 isolates, 41 (87.2%) isolates were resistant to 3 or more antibiotics. Moreover, the Salmonella profiles of each chicken meat brand were different by broiler operation. Brand A showed the highest prevalence of Salmonella (18 isolates, 60%), whereas brand G showed the lowest prevalence (one isolate, 3.3%). Eight among the 18 isolates of brand A were resistant to 11 antibiotics, whereas 5 of the 6 brand C isolates were resistant to only 2 antibiotics. This study demonstrates that a high proportion of chicken meat in Korea is contaminated with Salmonella and the prevalence and antimicrobial resistance patterns of Salmonella of chicken meat differ significantly according to the integrated broiler operation.

High Occurrence of Extended-Spectrum β-Lactamase-ProducingSalmonellain Broiler Carcasses from Poultry Slaughterhouses in South Korea

“…Previous studies have found that Salmonella Enteritidis is the most frequently reported Salmonella serovar detected in retail chicken meat and poultry slaughterhouses in South Korea (Chung et al, 2003;Woo, 2007;Kim et al, 2012), which is consistent with our findings.…”

“…The ESBL-producing Salmonella might be transmitted to humans from animals via contact or consumption of contaminated food, thus complicating the treatment (Carattoli, 2008;Liebana et al, 2013;Clemente et al, 2013). Although the prevalence and antimicrobial resistance of Salmonella from poultry samples in South Korea have been reported in previous studies (Woo, 2007;Hyeon et al, 2011;Kim et al, 2012), limited data are available for their ESBL characteristics.…”

“…Extensive use of antibiotics in animal husbandry has been suggested as the one of the important causes of antibiotic resistance observed among pathogenic bacteria isolated from humans, which makes human salmonellosis more difficult to treat (Fluit, 2005;Hyeon et al, 2011). The overuse and abuse of diverse antimicrobial agents underlie the emergence of multidrug resistant (MDR) Salmonella reported in many countries (Fluit, 2005;Kim et al, 2012;Wu et al, 2013). Therefore, the patterns of antibiotic resistance in Salmonella strains from poultry should be monitored periodically.…”

Recovery and prevalence of antibiotic-resistant Salmonella from fresh goat meat in Arusha, Tanzania

“…If the lack of overlap in antibiotic resistance is an appropriate metric, then it is likely that goats are not a significant contributor to Salmonella contamination in these waters. In addition, the prevalence of multi-drug resistant Salmonella observed in this study is lower compared to prevalence reported from other food animals in Sudan (33.3 to 66.6%), Ethiopia (93.2%), United States (62%) and Korea (87.2%) (Fadlalla et al, 2012;Ferede et al, 2015;Khaitsa et al, 2007;Kim et al, 2012). This difference may suggest low antibiotics consumption in goat populations raised from Arusha area.…”

Characterization of aSalmonellaTyphimurium ghost carrying an adjuvant protein as a vaccine candidate for the protection of chickens against virulent challenge

“…enterica serovar Typhimurium (Salmonella Typhimurium), a non-host-adapted Gram-negative intracellular pathogen, is capable of infecting a variety of animal hosts and humans (Barrow, 2007). In South Korea, the prevalence of Salmonella Typhimurium is widely reported in the broiler and layer chicken farms or poultry products (Rayamajhi et al, 2010;Kim et al, 2012;Choi et al, 2014). Chickens infected with Salmonella Typhimurium appear asymptomatic, but continue to shed the pathogen for long periods of time, with rare cases of systemic disease (Wales & Davies, 2011).…”