High prevalence of qnrVC variants in Vibrio spp. isolated from food samples in South China

Identification and Genetic Characterization of Conjugative Plasmids Encoding Coresistance to Ciprofloxacin and Cephalosporin in Foodborne Vibrio spp.

“…Vibrio species are bacterial pathogens that may cause food contamination at various stages of food processing from production to consumption. In our previous study, we reported the screening of qnrVC genes in a total of 1,811 Vibrio species strains isolated from 2,051 food samples (including pork, beef, chicken, and shrimp) purchased in Shenzhen, Guangdong province, China, during the period from August 2015 to April 2017 ( 20 ). In this study, we conducted a comprehensive characterization of Vibrio species strains carrying qnrS , the gene commonly reported to mediate expression of phenotypic ciprofloxacin resistance in other Gram-negative pathogens such as Salmonella ( 19 , 21 ).…”

“…Food-borne Vibrio isolates were collected from wet markets and supermarkets in Shenzhen, Guangdong province, China, during the period between August 2015 and April 2017, as reported in our former study ( 20 ). Bacterial DNA was extracted using the rapid boiling method ( 26 ); the qnrS gene was screened by a previously described PCR method ( 27 ).…”