Associations between Escherichia coli isolate antimicrobial resistance and antimicrobial usage
Escherichia coli was isolated from the feces of beef cattle from four commercial feedlots in Alberta, Canada. A total of 2,725 isolates were collected from 923 individuals. Antibiotic susceptibility of these isolates to 19 different antimicrobial drugs was determined by broth microdilution and/or disk diffusion assay. Antimicrobial use data was recorded for each feedlot, and associations between antimicrobial resistance and antimicrobial use were determined (see Table 5 in associated publication). Antimicrobial resistance and usage data used to determine associations are reported in this database.
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