Antimicrobial resistant bacteria detected from imported snails and bottom dwelling fish

This study aimed to identify foodborne indicator bacteria and zoonotic pathogenic bacteria and characterize resistant elements from imported snails and bottom dwelling fish available to the public. Imported snails and fish were purchased from grocery stores in Saskatchewan and Alberta, which are not included in the Canadian surveillance system for antimicrobial resistance (AMR). The high antimicrobial use in these areas could select for high levels of AMR, with particular concern for resistance to extended-spectrum cephalosporins and carbapenems. Standard culture techniques were used to grow and isolate important foodborne bacteria, including Salmonella, Escherichia coli, and Staphylococcus aureus. Several important bacterial pathogens were isolated from both snail and fish samples, with Escherichia coli found in 46% of snail samples and 11% of fish samples. The results demonstrate that imported snails and fish can be important carriers of antimicrobial resistant bacteria (ARBs) and antimicrobial resistance genes (ARGs) from one country to another. Further study is required to recognize the extent of ARBs/ARGs dissemination and potential link to infections occurring in Canada.