Associations between Escherichia coli isolate antimicrobial resistance and antimicrobial usage

Benedict, Katharine M.
Gow, Sheryl P.
McAllister, Tim A.
Booker, Calvin W.
Hannon, Sherry J.
Checkley, Sylvia L.
Noyes, Noelle R.
Morley, Paul S.
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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.
Primary contact: Paul S. Morley (
Cattle Enrolled in Study: September 2007-January 2010.
Department of Clinical Sciences
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antimicrobial resistance
Escherichia coli
antimicrobial drug
Associated Publications
Benedict KM, Gow SP, McAllister TA, Booker CW, Hannon SJ, Checkley SL, et al. (2015) Antimicrobial Resistance in Escherichia coli Recovered from Feedlot Cattle and Associations with Antimicrobial Use. PLoS ONE 10(12): e0143995.