Antimicrobial Resistance in Escherichia coli Isolated from Shellfish Farms on the West Coast of Korea

Abstract

A total of 423 shellfish (Oysters, Crassostrea gigas; short-necked clams, Ruditapes philippinarum and corb shells, Cyclina sinensis) were collected from the west coast of Korea, from which 277 Escherichia coli strains were isolated. The antimicrobial susceptibility patterns of isolated strains were analyzed for 22 antimicrobial agents used in Korea for clinical or veterinary therapy. The resistance of E. coli isolates to ampicillin (37.2%) was highest, followed by cephalothin (21.7%), cefazolin (19.9%), trimethoprim (15.2%). Antimicrobial resistance was present in 56.7% of E. coli isolates against at least one antimicrobial agent. Of 277 isolates, 44 (15.9%) were resistant to multiple antimicrobial agents.

Antimicrobial Resistance and the Presence of Virulence Genes in Escherichia coli Strains Isolated from Ruditapes philippinarum in Gomso Bay, Korea

“…(Kang et al, 2005;Lee et al, 2005;Cho et al, 2008;Byun et al, 2012;Cho et al, 2012;Han et al, 2015;Kim et al, 2015;Kim et al, 2016). , (Lee et al, 2003;Son et al, 2009;Park, 2013;Park et al, 2013;Jo et al, 2016 , amoxicillin (10 g; AML), ampicillin (10 g; AMP), cefepime (30 g; FEP), cefotaxime (30 g; CTX), cefoxitin (30 g; FOX), ceftriaxone (30 g; CRO), cephalothin (30 g; KF), cephazolin (30 g; KZ), chloramphenicol (30 g; C), ciprofloxacin (5 g; CIP), gentamicin (10 g; GN), imipenem (10 g; IPM), kanamycin (30 g; K), nalidixic acid (30 g; NA), streptomycin (10 g; S), tetracycline (30 g; TE), ticarcillin (75 g; TIC) 18 . .…”

“…, , amoxicillin, tetracycline, cephalothin, streptomycin (Lee et al, 2003;Son et al, 2009;Park, 2013;Park et al, 2013;Jo et al, 2016 amoxicillin-ampicillin-cephazolin-nalidixic acid-ticarcillin 8 . amoxicillin-ampicillin-cefotaxime-ceftriaxone-cephalothin-cephazolin-nalidixic acid-streptomycintetracycline-ticarcillin 10 1 (0.7%) .…”