J Bacteriol Virol.  2020 Jun;50(2):107-116. 10.4167/jbv.2020.50.2.107.

Prevalence of Carbapenem-Resistant Enterobacteriaceae in Seoul, Korea

  • 1Seoul Metropolitan Government Research Institute of Public Health and Environment, 30, Janggunmaeul 3-gil, Gwacheon-si, Gyeonggi-do 13818, Republic of Korea


The prevalence of carbapenem-resistant Enterobacteriaceae (CRE) is increasing globally. However, a few studies have addressed their epidemiology in Seoul, Korea. In this study, we conducted one-year surveillance of CRE among 1,468 clinical isolates of Enterobacteriaceae at the hospital in Seoul with molecular characterization of carbapenemase genes. About 85% of CRE-positive samples were isolated from the elderly age group (above 60 years). The most common isolated organisms were Klebsiella pneumoniae (K. pneumoniae) (56.5%) and Escherichia coli (E.coli) (17.0%). We detected six different Carbapenemase-producing Enterobacteriaceae (CPE) of blaKPC, blaNDM, blaOXA, blaVIM, blaIMP, and blaGES alone or in combination with other bla genes. Typically, 853 (58.1%) isolates were tested positive for at least one CPE. KPC (K. pneumoniae carbapenemase)-2 was the most common CPE type (46.0%) followed by NDM (New Delhi metallo-β-lactamase)-1 (5.9%). KPC-2 was most commonly found in K. pneumoniae (494/676 isolates [73.1%]) and E.coli (107/676 isolates [15.8%]), whereas NDM-1 was commonly found in Enterobacter cloacae complex (20/86 isolates [23.3%]). Detailed information and molecular characteristics of CPE is essential to prevent the spread of these pathogens.


Carbapenem-resistant Enterobacteriaceae (CRE); Carbapenemaseproducing Enterobacteriaceae (CPE); Klebsiella pneumoniae
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