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KMID : 1142720190220030055
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Annals of Clinical Microbiology
2019 Volume.22 No. 3 p.55 ~ p.60
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Serotyping and Antimicrobial Susceptibility of Salmonella Isolated in Korea in 2015
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Kim Si-Hyun
Park Eun-Hee
Hwang In-Nam
Lee Hyuk-Min
Song Sae-Am
Lee Mi-Ae
Lee Seung-Ok
Kim Soo-Young
Kim Jin-Ju
Shin Jong-Hee
Hong Seong-Geun
Shin Kyeong-Seob
Kim Sun-Joo
Ryoo Nam-Hee
Lee Woon-Hyoung
Jang Sook-Jin
Shin Jeong-Hwan
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Abstract
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Background: Salmonella is an important pathogen that causes gastroenteritis and sepsis in humans. Recently, changes in serotype prevalence and an increase in antimicrobial resistance have been reported. This study investigated the distribution of Salmonella serotypes and determined the antimicrobial susceptibility of various strains.
Methods: We collected 113 Salmonella isolates other than Salmonella serotype Typhi from 18 university hospitals in 2015. The serotypes were identified by Salmonella antisera O and H according to the Kauffman White scheme. Antimicrobial susceptibility tests for 12 antibiotics were performed using the disk diffusion method or E-test.
Results: We identified 22 serotypes. Serotype group B (44.2%) was the most common, followed by groups C (34.5%) and D (21.2%). Salmonella I 4,[5],12:i:- (23.0%), S. Enteritidis (16.8%), and S. Typhimurium (12.4%) were the most common species. Resistance rates for ampicillin, chloramphenicol, ceftriaxone, and trimethoprim/sulfamethoxazole were 46.9%, 18.5%, 8.8%, and 5.3%, respectively. The intermediate resistance rate to ciprofloxacin was 29.2%. Six isolates were extended-spectrum β-lactamase (ESBL) producers, including 5 blaCTX-M-15 and 1 blaCTX-M-55.
Conclusion: There have been changes in the serotype prevalence and antimicrobial resistance of Salmonella in Korea, with a high prevalence of CTX-M 15-positive strains. Continuous monitoring of Salmonella serotypes and antimicrobial resistance is warranted.
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KEYWORD
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Antimicrobial resistance, Salmonella, Serotype
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