Prevalence and antimicrobial susceptibility of Vibrio parahaemolyticus isolated from oysters in Korea

Abstract

Vibrio parahaemolyticus is the most prevalent gastroenteritis-causing pathogen in Korea and in some other Asian countries. It is frequently found in oysters and other seafood. This study monitored changes in the prevalence of V. parahaemolyticus and environmental parameters in oyster aquaculture environments in Korea. From June to October 2014, we tested oysters (Crassostrea gigas) from shellfish-harvesting areas off the west coast of Korea. These 71 isolates were the sum of 16 (22.5%), 19 (26.8%), 23 (32.4%), and 13 (18.3%) isolates collected in July, August, September, and October, respectively. These 71 isolates had the following profiles of resistance against 16 antibiotics: all isolates were resistant to ampicillin and vancomycin, and 52.2, 50.7, and 50.7% of isolates exhibited resistance to cephalothin, rifampin, and streptomycin, respectively. PCR analysis for the presence of the species-specific toxR gene confirmed that 38 (53.5%) of the total 71 isolated strains were positive for V. parahaemolyticus. In PCR analysis for virulence of V. parahaemolyticus, of the 71 isolates tested in the present study, only 38 (53.5%) were positive for the trh virulence gene and 71 (100%) was negative for the tdh virulence gene.

Species identification, virulence markers and antimicrobial resistance profiles of Aeromonas sp. isolated from marketed hard‐shelled mussel ( Mytilus coruscus ) in Korea

“…Multidrug resistance of food‐borne bacteria is an important public health concern. Although the application of antimicrobials is the least common practice in bivalve culture, the excessive use of antimicrobials in human, veterinary, agriculture and aquaculture may cause antimicrobial contamination in the coastal water environments (Kang et al ). Bacteria can be naturally resistant to certain antimicrobials, but they can become resistant by horizontal gene transfer (Dahanayake et al ).…”

Antimicrobial resistance and genetic diversity of Salmonella enterica from eggs

“…In recent decades, antimicrobial resistance has emerged and evolved in many bacterial as the excessive use of antimicrobials in human and aquaculture systems (Kang et al, ; Li et al, ). The emergence of antimicrobial resistance in Salmonella to antibiotics such as ampicillin, chloramphenicol, and cotrimoxazole will further complicate the treatment and management of enteric fever (Ejaz et al, ).…”

“…In recent decades, antimicrobial resistance has emerged and evolved in many bacterial as the excessive use of antimicrobials in human and aquaculture systems (Kang et al, 2016;Li et al, 2013).…”

Vibrio spp. from Yesso scallop (Patinopecten yessoensis) demonstrating virulence properties and antimicrobial resistance

“…Moreover, various seafoodborne pathogens have been reported as multidrug resistant, and there have been many such studies related to vibrios isolated from various kinds of seafood including bivalves (De Silva, Hossain, Dahanayake, De Zoysa, & Heo, ; Kang et al, ; Lopatek, Wieczorek, & Osek, ). The overuse and misuse of antimicrobials in aquaculture can increase the antimicrobial‐resistance of zoonotic pathogens in the aquatic environment (Cabello, ).…”